4.Assay of acetic acid in vinegar is an example of proximate analysis 5.Example of variable defects are color, clarity, sheen, cleanliness, smoothness, taste, and presence or absence of a characteristic. 6.Liberation of carbon dioxide during acid-alkali titration renders the analyte acidic
Q: hydrogen atom absorbs photons with wavelength 94.97 nm. What is the energy of this photon, in al?…
A:
Q: Draw curved arrows to show the movement of electrons that illustrates the mechanism of the reaction.…
A: Given reaction: We have to draw the curved-arrow mechanism of the reaction.
Q: Select all of the following that are anions. Multiple select question. Br- Mg2+ Fl- Na+ Cl-…
A: we have select the anions from the given species
Q: Assign each mass spectrum to the molecule on the list. Write down the molecule that corresponds to…
A:
Q: Chemistry Given this alkene draw the pentamer that would result from acid initiation followed by…
A:
Q: The entropy of vaporization for a certain organic compound is 28.1 J/Kmol, and the boiling point is…
A: given data entropy of vaporization 28.1 J/kmol boiling T=51.7 ;c find out enthalpy of vaporization
Q: Study the diagram below, then fill in the blanks. *Assume all gases are at equal temp. and pressure.…
A: So here first we need to balance the equation as 1N2(g) + 3H2(g) ----------> 2NH3(g) So the…
Q: 10. Between 0°C and 90°C, the potential of the cell Pt(s) | Hz(g. 1.00 atm) | HCl(aq, 0.100 m)…
A: 10. Given that, a cell is Pts|H2g, 1.00 atm|HClaq, 0.100 m|AgCls|Ags. The potential of the cell in…
Q: Complete the organic reaction.
A: Here base abstract the acidic hydrogen and form enolate which was attack with carbonyl compound and…
Q: Question 1 Which combination results in the formation of a precipitate? O aqueous ammonium carbonate…
A: We have to tell among the given combinations, which one results in the formation of a precipitate.…
Q: 2N2O5 (aq) → 4NO₂ (aq) + O₂(g) In a previous step, you calculated the rate of disappearance of N2O5…
A:
Q: Given the formula for The Gas Law: PV = nRT. Katie tried to solve for the V variable in order to…
A: The general gas equation, commonly known as the ideal gas law, is the state equation of a…
Q: How many mmols of sodium bicarbonate (NaHCO3) exist in 10 mL of a 10% aqueous solution of this…
A: Given, Volume of the solution = 10 mL Percentage of aqueous solution = 10 % 10% = 10.00 g/100 mL…
Q: Do the two gases have the same molar mass? If not, yes no, 2-L flask contains the gas of higher…
A: Pressure and Temperature same.
Q: For the proton transfer shown, the equilibrium constant, K, = 10%. What is x? Ö: H pK₂ = 24 pK₂ = 36…
A: For reaction to be favorable ∆pka must be postive. ∆pka = pka(product-reactant) = 36-24 = +12…
Q: 9. What fuel cell value can you calculate with the Gibbs' theory of free energy's formula? a. Fuel…
A: Gibbs free energy and the standard cell potential of a cell are related as follows: ΔGo=-nFEo Where…
Q: In addition to checking your math, check that you us Complete the following table. Be sure each of…
A:
Q: Which of the reactants are fastest at SN1 reaction mechanism? A B C D
A: In SN1 (unimolecular nucleophilic substitution Reaction) following order of carbocation used -…
Q: Classify the substance as a weak acid, weak base, strong acid, or strong base Based on your…
A: NaH2PO4 is sodium dihydrogen phosphate which is a singly deprotonated salt of phosphoric acid,…
Q: combustion of octane (in gasoline) occurs according to the reaction 2 CgH₁8 + 25 0₂ 16 CO₂ +18 H₂O.…
A: Given-> ∆Hf(octane) = -268.8 KJ/mole ∆Hf(CO2) = -394KJ/mole ∆Hf(H2O) = -286 KJ/mole
Q: The U.S. Food and Drug Administration lists dichloromethane (CH₂Cl₂) and carbon tetrachloride (CCl4)…
A: Given that, a mixture contains 1.50 moles of CH2Cl2 and 1.00 mol of CCl4. So, the number of moles of…
Q: 33.Neutralization reactions in titrimetric methods of analysis may be: a. Complexomtery b.…
A: Q.33 Ans: (b) alkalimetry The strength of a base can be found with the help of a standard…
Q: Draw the major organic product of the SN 1 reaction: OH HBr heat Select Draw Rings /||||||| с H Br…
A: Organic chemistry is branch of chemistry in which we deal with organic reactions. In organic…
Q: reagent will give a Hoffman product when it reacts with 2-bromobutane?
A: Hoffman products are products with less substituted double bond. For this bulky base are required.
Q: raw the major organic product of the SN1 reaction:
A: Carbocation can be defined as the molecule in which a carbon atom carries positive charge.
Q: Quinine is a natural product extracted from the bark of the cinchona tree, which is native to South…
A: Here we are required to find the molar mass of quinine .
Q: element? 24 25 Ⓒ26 There is not enough information to get the correct answer Submit Request Answer Q…
A: It is given that the element always looses 2 electrons to give +2 charge . Hence it is clear that…
Q: Based on the molecular orbital model, choose all of the following molecules or ions that are stable…
A: Choose stable molecules--
Q: 12-13. (12) (13) NaNO₂, HCI (14) base insoluble acid (15)
A:
Q: 7. A feed of brackish water at 25°C, composed of the following solutes, is to be purified.…
A: The osmotic pressure (π) can be calculated as: π=iCRT where i is the van't Hoff factor, C is the…
Q: Calculate the approximate temperature of a 0.20 mol sample of gas at 750 mm Hg and a volume of 9 L
A:
Q: 2. Two composites are produced; one composite contains 30 vol% SiC particles, while a second…
A: The composite that contains the SiC in the form of fibers will will have the higher heat capacity.…
Q: rue/False dicate whether the statement is true or false. Write T if the statement is true while F if…
A: 16. When the sample requirement is large it is actually imposible to work with it without prior…
Q: a dosage requires a patient to recieve 64.8mg of medicine for every 8kg of body weight for every 4…
A:
Q: Which of these solvents is polar protic? 1) Methanol 2) DMSO 3) DMF 4) ACN
A: Polar molecules are molecules having non zero dipole moment and non polar molecules have zero dipole…
Q: Calculate the standard cell potential produced by a galvanic cell consisting of a nickel electrode…
A:
Q: For the SN2 reaction, draw the major organic product and select the correct (R) or (S) designation…
A:
Q: 51. The substance being analyzed is the: a. Titrant b. Analyte Salt d. Indicator
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Propose a structure for the starting material of the below reaction scheme, and answer any follow-up…
A: Unsaturated compound undergoes ozonolysis reaction in presence of ozone gas and gives carbonyl…
Q: For the electrochemical cell: Au / Aul(s)//HI(M), H₂ (1atm.) / pt. What are (a) The half cell…
A: Given in following question representative a electrochemical cell Au/AuI(s)// HI(M),H2(1atm)/pt.…
Q: حلة الاول كن نمي كول وبات الي الاستقرار مائل اوشش What if There Is No Carbonyl Group? The amino…
A:
Q: 1.00 g of benzoic acid corresponds to how many mmols of this compound?
A: Given that, 1.00 g of benzoic acid. We have to calculate the corresponds amount of benzoic acid in…
Q: Predict the elimination products for the reaction. Identify the major and minor stereoisomers and…
A:
Q: b) ہنڈا F Br xxx Sug g) Br etco Fall 2021 Spring 2022 Screen Shot 2022-0...49.34 PM Organic…
A: Name the following compounds. only part f,c and g.
Q: What quantity of heat (in kJ) will be released if 0.3387 mol of NH3 are mixed with 0.200 mol of O₂…
A: The limiting reagent in a chemical reaction is a reactant that is totally consumed when the chemical…
Q: 2. A Tlc plate was run on the fractions (#1-4) collected from a silica gravity column chromatography…
A: According to the company guidelines, we have to answer the first question only. So, please kindly…
Q: Propose the major product for each of the following reactions and propose a reaction mechanism for…
A:
Q: tion that 18.This is the weight of the substance chemically equivalent to 1 mL of the standard…
A: 18 Titer is the weight of the substance which is chemically equivalent to 1ml So correct option is…
Q: From the following structure locate these examples of types of atoms or bonds: 1. a highly polarized…
A: In given structure we have to locate the following 1. a highly polarized single bond2. A highly…
Q: Convert between mass and moles of an element. What amount of oxygen, in moles, does 49.8 g 0…
A: Given that, mass of O=49.8 g molar mass of O= 16 g mol-1 moles of O=?
Step by step
Solved in 4 steps
- 1.Determine the color of the indicator in a given condition: METHYL ORANGE IN AN ACIDIC ENVIRONMENT. 2.This is the measure of reproducibility of data within a series of results. 3.This is the chemical to be subjected to testing in titrimetric method of analysis. 4.Determine the type of assay employed for this substance: TARTARIC ACID 5.Determine the color of the indicator in a given condition: PHENOLPHTHALEIN IN AN ALKALINE ENVIRONMENT. Please help me answer this questions. the answers are on the image I attachedTopic: Standardization of acid and base with back titration Note: Include up to 4 decimal places Kindly explain the process Thank you!A sample is known to contain about 20% soda ash. What sample size should be taken for analysis, if it is to be dissolved into a 50 mL volumetric flask, with 10 mL aliquots analyzed, if it is desired that the analysis consume a total of 40 mL 0.10 M HCl with 10 mL of 0.10 M NaOH used in the back-titration, after boiling.
- Procedure Preparation of Dilute Solution of Vinegar • Using a 10 mL pipette, transfer 10mL of vinegar into 100 mL volumetric flask. • Dilute to mark of the volumetric flask using distilled water. B. Titration of Diluted Solution of Vinegar • Transfer 25 mL of diluted solution to 250 mL Erlenmeyer flask. • Add 0.5 mL phenolphthalein indicator. Set aside. • Transfer 50mL of 0.110 M NaOH into a 50 mL burette. • Titrate the diluted solution until the phenolphthalein endpoint (very faint pink). • Record volume of NaOH used. Answer the question: What is the experimentally determined concentration of acetic acid in your vinegar solution: (Please give your answer to three significant figures.) ______ M Acetic AcidWhich of the following statements is true regarding permanganimetry? a) Permanganate solution can oxidize water which is catalyzed by the presence of manganese dioxide or manganese ion. b) The light pink endpoint color for permanganimetry tends to fade with time due to the catalytic reaction. c) Standardization of the permanganate titrant is carried out at elevated temperature with sodium oxalate. d) all of these e) none of theseThe graphic below shows the general procedure for titrating the saturated solution of magnesium hydroxide with hydrochloric acid. Select all of the true statements from the choices below. 1. Obtain a saturated solution of magnesium hydroxide. 0 2. Transfer 30.0 mL to an Erlenmeyer flask using a volumetric pipet. Add phenolphthalein. 3. Titrate to a colorless endpoint using 0.0020 M hydrochloric acid. It is important that the aliquot drawn in step 2 does not contain undissolved magnesium hydroxide solid. For titrations of the saturated solutions at elevated temperatures, the solution must be held at high temperature for the duration of the titration. Hydrochloric acid is the analyte in this titration. The volume of liquid in the buret should be read before and after the titration. At the endpoint of the titration, the solution will turn from colorless to pink.
- Use the following information to answer the next question. A student performed a number of qualitative tests on a sample of CsMn04 and recorded the following data. I. a resulting solution did conduct electricity II. the flame test of a resulting solution produced a violet colour III. a precipitate formed when LICIO4(aq) was added IV. a resulting solution was colourless The data that is inconsistent with expected results I II III IVWhat recommendations can you give in titration of mixed alkali?A sample may contain NaOH, NazCO3 and NaHCO3, alone or in some combination, along with inert material. A samplewitha mass of 857.6 mgwas dissolved and titrated with0.1163 M HCI. The volume of HCl used from 0 to methyl red endpoint (Phenolphthalein endpoint was not monitored here) was found to be 36.54 mL. Another 228.8 mg portion of the sample was titrated to the phenolphthalein endpoint and 10.82 mL was used up for this titration. a. What is the composition of the sample? b. Calculate the percentage of each of the component present.
- You are the manager of a chemical stockroom, and find a bottle containing approximately one liter of aclear and colorless solution of unknown identity and concentration. Your only clue to its identity is thatit was found between bottles of silver fluoride and sodium fluoride, so it is likely an aqueous solution ofone of those two compounds. You will need to develop a procedure to determine the following:a) The identity of the unknown solutionb) The concentration of the unknown solutionWrite out a precise procedure, which includes all glassware, reagents, and steps. You will also need towrite the calculations that you would need to determine the concentration of the solution. Assume thatyou have access to any reagent you might need. You may also assume that you have access to commonlaboratory equipment. You observed some examples of laboratory equipment within the VirtualChemistry Laboratory simulations. You may visit the virtual lab at chemcollective.org to refamiliarizeyourself with…Calculate the percentage CH3COOH in a sample of vinegar from the following data.Sample = 15.00 g, NaOH used = 43.00 ml ; 0.600 N H2SO4 used for back titration =0.250 ml ; 1.00ml NaOH is equivalent to 0.0315 g H2C2O4. 2H2O.1. Differentiate the Faians method from the Volhard method of precipitation titrimetry, Include key information such as indicator used, endpoint, analytes, and the chemical reactions.