Determine the value of Kc at 25 °C for the reaction 2H₂O + 2Cl₂4H* + 4CI¯ + O₂ E° (Volts) +1.36 +1.23 Half-Cell Reaction Cl₂(g) +2e= + 2Cl- (aq) O₂(g) + 4H+ (aq) + 4e¯—2H₂O Enter your response in scientific notation, e.g. enter 2E3 for 2000 Kc=

Q: Workshop extra: past paper Jan 2021 Answer all parts. (a) Considering the following aromatic…

A: Birch reduction is faster for electron deficient ring or electron withdrawing present on ring And…

Q: Question 34 What is the name of CaCl2? O Calcium chloride O Calcium dichlorate O Calcium chlorate…

A:

Q: 101 molecular formula empirical formula: 00 0 0 made up of these molecules The lines stand for…

A: Empirical formula and molecular formula are two ways to represent the Chemical formula for a given…

Q: Draw structures for the carbonyl electrophile and enolate nucleophile that react to give the aldol…

A:

Q: How many moles of oxygen are present in a 6 L sample of dry air at 6 atm and 88 °C? (R=0.0821 L…

A: Answer: Given data: V=6LP=6atmR=0.0821L-atm/mol-K T=88°CT=(88+273.15)KT=361.15K

Q: 7.  Calculate number of grams required to prepare: a.450.0 mL of a 1.2M KBr solution. b.1.50 Liter…

A:

Q: Which of the following elements has the smallest first ionization energy? A) S B) O C) Si D) Sr E)…

A: Ionization energy is the minimum amount of energy required to remove an electron from a valance…

Q: Which of the following is the fastest in SN2 reaction with cyanide (CN-)? a. 1-iodo-3-methylpentane…

A: Here firstly we needs to know about the SN2 reaction.  The reaction proceeds in only one step.…

Q: Cnsider the following list of acids and their respective Ka values. H₂SO3, 1.3 x 10-2 HF, 6.7 x 10-4…

A: Acid dissociation constant Ka is given in the question. So we simply can predict which acid is…

Q: In the following reaction, what is the quantity of heat (in kJ) released when 4.03 moles of CH₄ are…

A:

Q: A solution that has 1.457 mol KCl in 1.500 L is _______ M in KCl.

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

Q: ammonium = NH4+ nitrate = NO3- carbonate = CO3²- phosphate = PO4³- b. Cu₂O hydrox sulfate 3) Provide…

A: Question 3 -->  (a) Mg(NO3)2 --> Magnesium Nitrate  There is a magnesium cation and Nitrate…

Q: Using the provided table, determine the molar enthalpy (in kJ/mol) for the reaction 2 K(s) + 2…

A: Given that, a chemical reaction is 2K(s) + 2H2O(l) → 2KOH(aq) + H2(g). Also, the standard enthalpy…

Q: Which of these is an exception to the octet rule? O a. NF3 O b. H3O+ O c. CO2 O d. PC13 O e. IF4+

A: According to octet rule, every element form bond with another element in such a way so as to obtain…

Q: After balancing the following reaction in acidic conditions, how many H+ ions are needed and on what…

A: Oxidation: It involves increase in oxidation number. Reduction: It involves decrease in oxidation…

Q: Draw the major product of this reaction. Ignore inorganic byproducts. 1. NaNH2 2. CH3CH2CH2CH2Br (1…

A:

Q: Lead(II) nitrate and ammonium iodide react to form lead(II) iodide and ammonium nitrate according to…

A:

Q: a system has 63.5 J of heat added to it, and the system does 75.5 J of work on its surroundings,…

A:

Q: Chemistry Predict product for the reaction. c) Me 2 P Pt PMe 2 OH

A:

Q: Calculate the mass percent for a solution containing 50.0g of NaCl dissolved into  500.0g water.

A:

Q: Is density a chemical or physical property? O Chemical Physical

A: Answer: In general properties of substance can be classified into following two parts: 1. chemical…

Q: A dilute solution of bromine behaves ideally with a non-polar solvent at 300K. The Henry's law…

A: Henry's law constant for Br2 in pure solvent, KH= 150 torr Mole fraction of Br2 in solution, χBr2=…

Q: How many calories are in 9671 kilojoules ? (1 cal = 4.184 J)

A:

Q: A reaction at 19.0 °C evolves 505. mmol of dinitrogen difluoride gas. Calculate the volume of…

A: Answer : Given that Pressure (P)= 1 arm Temperature= 19°c= (273+ 19) = 292K Number of moles (n)=…

Q: 3. Which of the following conjugate bases are not correct? Conjugate Base a. C. Acid H-O+ b d. Acid…

A: Given that, We have to tell among the given acids and conjugate bases, which one is not correct.

Q: In the table below, rank the molecules in order from least reduced (1) to most reduced (4). Molecule…

A: Reduction means gain of hydrogen whereas oxidation means loss of hydrogen.

Q: 1 .CI Br 5 CI 3

A: Answer: Nucleophilic substitution is the characteristic reaction of alkyl halides where a…

Q: 12* Compound X has an unknown structure, but has a molecular formula of C₂H₁2. Solve for its…

A: Given that, the molecular formula of an unknown compound X is C7H12. We have to determine the…

Q: A sample of 1.91 g of potato chips was burned in a calorimeter. The calorimeter was calibrated to…

A: The mass of the potato chips sample = 1.91 g The heat capacity if given by = C = 6.94 Kcl/ °C The…

Q: A block of metal (density = 7.87 gz/c-mz3) has dimensions of (5.59 c-mz) x (2.17 ftz) x (95.5 m-mz).…

A: The change of units from one to another to express any measurable quantity is known as unit…

Q: Macmillan Learning A 4.91 g sample of a laboratory solution contains 1.04 g of acid. What is the…

A: Given : mass of acid = 1.04 g               Mass of solution = 4.91 g  Concentration (w/w. %) =…

Q: Using the equations 2 Fe (s) + 3 Cl₂ (g) → 2 FeCl₃ (s) ∆H° = -800.0 kJ/mol Si(s) + 2 Cl₂ (g) → SiCl₄…

A:

Q: Categorize each molecule according to which hybrid orbitals are used by the central atom to form.…

A: Hybridisation is the concept of mixing atomic orbitals to form new hybrid orbitals suitable for bond…

Q: The amount of 13(aq) in a solution can be determined by titration with a solution containing a known…

A: Given -> Volume of Na2S2O3 = 27.8 ml = V1 Molarity of Na2S2O3 = 0.200 M = M1 Volume of I3- = 20.0…

Q: For the H-atom, how does the Atomic model as described by Bohr connects to the atomic model as…

A: The Bohr atomic model is also called as structural model of an atom.  The Schrodinger atomic model…

Q: Express your answers in scientific notation with three significant digits.  a.) Tea pH=5.5  b.)…

A:

Q: Is phosphorus a metal? O Yes O No

A: Given that, Is phosphorus a metal?

Q: Calculate the pH-values of the following solutions.  c) Ca(OH)2, c(OH-) = 0.3 mol/L (strong base)…

A:

Q: 4. Valence Bond Theory. Consider formaldehyde, H₂CO. ( a) Draw a Lewis structure of formaldehyde. b)…

A: sp2 hybridized formaldehyde.

Q: In planning the synthesis of one compound from another, it's just as important to know what not to…

A: The concept used here is from Organic Chemistry.  Also to be very precise the concept used here is…

Q: In the table below, rank the molecules in order from least reduced (1) to most reduced (4). H…

A: The concept used here is from chemical binding.  Here more positive charge on carbon atom us most…

Q: Given AH = -90.25 kJ for the reaction below: NO(g) → ½ N2(g) + ½ 02(g), calculate AH for the…

A:

Q: A sample of argon gas has a volume of 5.00 L at STP. If the pressure remains constant, at what…

A:

Q: Question 11 Intramolecular forces primarily impact the chemical properties of substances or impact…

A: There are two types of forces. 1. Intra molecular forces 2. Inter molecular forces   Intra molecular…

Q: Rank the following solutions with the most acidic at the top and the most basic at the bottom at…

A:

Q: A scientist measures the standard enthalpy change for this reaction to be 4.2 kJ/mol. Fe(s) + 2…

A:

Q: What are the products for the following reactions?

A: We have to give the products of the given reaction scheme.

Q: Question 7 Look at table 10-3 in your lecture notes. Which of the following is the BEST way (of…

A: Given that, Average electric use/year(kWh) by appliances is given in the table, we have to told that…

Q: The graph below shows the probability of molecular velocities for sulfur hexafluoride gas (SF6) at…

A: SF6 is a synthetic, odourless gas that's used in the electricity industry to keep networks running…

Q: Explain tropylium ion formation in Electron Ionization Mass Spectroscopy (EI-MS). Please answer at…

A: Mass spectrometry is an analytical tool which is used for measuring the mass-to-charge ratio (m/z)…

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.