Which of the following is a primary standard for NaOH? A. None of these B. Potassium acid phthalate C. HCl D. KH2PO4 E. KHSO4

Q: The instructor reveals that the weak acid is hypochlorous acid, HOCl. The known Ka for HOCl is…

A:

Q: I mixed hard water or tap water or soft water 5ml + pH buffer 1ml + 3 drops of indicator + EDTA xml…

A: Hard water refers to the water sample that contains soluble salts of calcium and magnesium. It does…

Q: A student mixes 40.mL40.mL of 0.10MHBr(aq)0.10MHBr(aq) with 60.mL60.mL of 0.10MKOH(aq)0.10MKOH(aq)…

A:

Q: A 300.00 mL solution of 0.00165 M A2B5 is added to a 230.00 mL solution of 0.00380 M C2D3. What is…

A: The volume of 0.00165 M A2B5 solution is 300.00 mL. The molarity of 230.00 mL solution of C2D3 is…

Q: What are the functional groups for the Qualitative  Tests for carbonyls  and Unknown Carbonyl.

A: We are given an unknown carbonyl compound and its test results and IR spectrum.

Q: 5- Instrumental methods of analysis example such 6- Acid equivalent weight can calculated by…

A: Fill in the blanks are given as:

Q: Titration Results Initial buret reading (ml) Final buret reading (ml) Total volume used (mL) 0.00…

A: Answer: This is question based on titration of strong acid against strong base where acid is the…

Q: 2AgNO3(aq) +CaBr2(aq) --> 2AgBr(s) + Ca(NO3)2 (aq). Calculate the excess of the excess reagent, in…

A:

Q: A 25.0 mL sample of H3PO4 requires 50.0 mL of 1.50 M NaOH for complete neutralization.  What is the…

A: Given, volume of NaOH = 50.0 ml = 0.05 L Molarity of NaOH = 1.50 M  First we find the number of…

Q: Weak Acid Titration The weak acid was dissolved in 100 ml of H2O Use the titration data to…

A: At the end point all the H2A will completely dissociated to A2-. Therefore, mmol of A2- at 41.5 mL…

Q: In order to obtain 3.500 % of acetic acid, what weight of a sample must have been taken for analysis…

A: Answer: Given data: Mass % of acetic acid (w/w)%=3.5%   Normality of KOH=0.1150NVolume of…

Q: If the pKa of the indicator is approximately 6, to which of the following equivalence point will it…

A: Given, pKa = 6 At equivalence point,  pH = ?

Q: ) What four attributes must one have for a primary standard? b) State which chemical used in this…

A: a) The four attributes for a primary standard are :-  i) High purity. ii) Stability (low reactivity)…

Q: What is the molar it’s of NaOH of each trial and the average molarity of NaOH

A: We can calculate the molarity of NaOH by using the eqn.  M HCl VHCl = M NaOHVNaOH Usually in acid -…

Q: 1. Which of the following is the best primary standard for the standardization of NaOH? a. KHP b.…

A: (1) A main standard is a reagent that can be easily weighed and is sufficiently pure that it…

Q: Using the experimental data at 1/2 the equivalence point volume, calculate the Ka of acetic acid.

A: When acetic acid reacts with NaOH, the following reaction occurs: CH3COOH+NaOH→CH3COONa+H2O

Q: Back titration method is used when the reaction between standard reagent and analyte is : Select…

A: Back titration method is a method in which the analyte being titrated is not consumed in the…

Q: Which Keg corresponds to a negative value of AG , Keg = 225 or Keg = 0.125? Select the single best…

A:

Q: which of the following is secondary standard ?  A) hydrochloric acid  B) sodium oxalate ,  C)…

A: Given compounds, A) hydrochloric acid B) sodium oxalate C) potassium hydrogen phthalate D) sodium…

Q: -37 H Indicator bromocresol green blue phenolphthalein methyl red phenol red Colour chlorophenol red…

A: Chlorophenol red dye is a indicator that change the colour in titration at pH range 4.7 to 6.8.…

Q: Find the fraction in the form NH3 at pH 10.00.

A: pKb of ammonia, NH3 = 4.74 pKa of NH4+ =14 - pKb=14 - 4.74=9.26

Q: What is the volume of NaOH used in each trial? Titration Lab Trial 1 Trial 2 Trial 3 Volume of Acid…

A: According to the equation. M1V1=M2V2M1=molarity of acidV1=volume of acidM2=molarity of baseV2=volume…

Q: Acetic acid (Ka = 1.75 x 10-5 ) and formic acid (Ka = 1.80 x 10-4 ) are both present at equimolar…

A: The answer of the question given below:

Q: 1. The [H30"], in M, of 10.00 mL of 0.100 M NaOH after adding 10.00 mL of indicator solution. To…

A:

Q: Analysis of Unknown Volume of Acetic Final buret reading (mL) Acid Initial buret Volume of NaOH…

A:

Q: ) A 0.2185g sample of NaCl was assayed using Volhard Method with 50mL 0f 0.0998N AgNO3 and 11.9mL of…

A:

Q: 1. Do you always have to use a primary standard in the standardization of titrant? Why or why not?

A: Standardization is a technique used to determine the exact concentration of a solution. This…

Q: In the second test, you will prepare 10 mL of each solution containing 0.1%, 0.2%, 0.5%, 0.8%, 1%,…

A: Amount needed for the preparation of 5 mL, 10% stock solution of H2O2 from the 10% stock solution…

Q: Based on the results obtained in the following table, which indicator has approximately a pka of 4?…

A: The indicators are chemical compounds that show changes in color at a definite change in pH. Hence…

Q: how many mLs of 0.125 M Ba(OH)2 would be required to completely nuetralize 75.0 mL of 0.845 M HCI?…

A: Given  Molarity of Ba(OH)2  = 0.125 M                                    = 0.125 mol/L  Volume of…

Q: Experiment No. 10 QUALITATIVE ANALYSIS OF GROUP V CATIONS Table 1. Flame Test Cations Color…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: ou let your partner do a trial since you're nice. He/she adds a few mL of NaOH, but you realize that…

A: Given : you forgot to record the initial burette level of NaOH solution.

Q: mL of 0.1000 M Hydrochloric acid is titrated with 0.1000 M sodium hydroxide to form water and sodium…

A: Titrations are carried out to find the concentrations of the unknown solutions. The strong acid is…

Q: A Fajans titration of a 0.7908-g sample required 45.32 mL of 0.1046 M AgNO3 . Express the results of…

A:

Q: emperature (°C) 22°c Titration 3 Titration 1 Titration 2 Volume of Saturated Calcium 10:00 ml…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Which of the following is not standardized against sodium carbonate? a) H2SO4 b) NaOH c) HCl…

A: Which of the following is not standardized against sodium carbonate? a) H2SO4 b) NaOH c) HCl Which…

Q: L of HCI(g) at 37°C and 89.6

A: Dear student this question is related to molarity concept. Please note that the statement shown by…

Q: Part A. Titration of Pure Saturated Ca(OH)2 Solutionsnip Trial 1 Trial 2 Volume of Ca(OH)2 solution…

A:

Q: 5. What is [H3O+] in a solution of 0.075 M HNO2 and 0.030 M NaNO2? The pKa of HNO2 is 4.35. a. 1.1…

A:

Q: What is the [OH−] of a solution which is 0.1770 M in C5H5NH2 and 0.1897 M in C5H5NH3Br? C5H5NH2(aq)…

A: Given C5H5NH2(aq) + H2O (l) → C5H5NH3+ (aq) + O-H(aq)Concentration of C5H5NH2(aq) = 0.1770…

Q: Use the titration data below to answer the following questions regarding the titration of an unknown…

A: Volume of NaOH(mL) pH 0 1.7 4 2 7 2.8 8 5 9 7.2 12 7.9 17 8.31 22 8.9 24 9.8 25…

Q: 40. A solution is made by taking 2.42 grams of NaCl, 6.44 grams of NaC104, 3.81 grams of KNO3, and…

A: Dear student , According to bartleby policy I am authorized to answer only 1st question only. If you…

Q: Matching type. Identify the color of each sample using a specific indicator. 1. Vinegar - Methyl…

A: Each indicator gives a specific color in a specific pH range.  Hence the color of each solution…

Q: Concentration of Hydrochloric Acid (M) 0.07036 22°c Temperature (°C) Titration 3 Titration 1…

A: The data given is, And the concentration of HCl = 0.07036 M

Q: Which of the diet sodas have the highest concentration of caffeine? Which standard best reflects…

A:

Q: 1. When using a volumetric technique to analyze an acid solution, why is sodium hydroxide not a…

A: NaOH has hygroscopic Property and absorbs carbon dioxide from air an this leads to the main reason…

Q: 15) How many milliliters of 0,225M HaPO, WOuld be needed to react exactly with 20.0mL of 0.135M…

A:

Q: uestion 8 Based on the results obtained in the following table, which indicator has approximately a…

A: The correct option is:

Q: The [H3O+] of a solution with pH = 2.0 is

A: The [H3O+] of a solution with pH = 2.0 is