Concept explainers
Calculate K for the reactions in Question 2.
(a)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of sodium acetate and nitric acid.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
Explanation of Solution
The net ionic reaction between aqueous solution of sodium acetate and nitric acid is as follows:
Since, for
As the required reaction is inverse of the dissociation reaction of
Substitute the value in the above expression as follows:
Therefore, the value of K is
(b)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of hydrobromic acid and strontium hydroxide.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
Explanation of Solution
The net ionic equation for the reaction between hydrobromic acid and strontium hydroxide is as follows:
Since, for
As the required reaction is inverse of the dissociation reaction of
Substituting the value in the above expression as below:
Therefore, the value of K is
(c)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of hypochlorous acid and sodium cyanide.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
48
Explanation of Solution
The net ionic equation for the reaction between Hypochlorous acid and sodium cyanide is as below:
Since, for
As the required reaction of HCN is inverse of the dissociation reaction of HCN so, the expression of K for this reaction is as follows:
Substituting the value in the above expression as follows:
=
The K value is 48.
(d)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of sodium hydroxide and nitrous acid.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
Explanation of Solution
The net ionic equation for the reaction between sodium hydroxide and nitrous acid is as below:
The expression of K for this reaction is:
The Kb value for NO2- is
The K value is
Want to see more full solutions like this?
Chapter 14 Solutions
Chemistry: Principles and Reactions
- Consider the reaction BaF2(s)+SO42(aq)BaSO4(s)+2 F(aq) (a) Calculate K for the reaction. (b) Will BaSO4 precipitate if Na2SO4 is added to a saturated solution of BaF2?arrow_forwardRefer to Appendix J for solubility products for calcium salts. Determine which of the calcium salts listed is most soluble in moles per liter and which is most soluble in grams per liter.arrow_forwardThe text describes zinc hydroxide as an amphoteric hydroxide, so Zn(OH)2 is soluble in basic solution. What is the molar solubility of Zn(OH)2 in 1.00 M NaOH? What is the pH of the equilibrium solution?arrow_forward
- If the molar solubility of Ag2SOA In water is 1.44 x 102 M, calculate the solubility product, Kn, forAgSO.arrow_forward18.0g of zinc is added to 100.mL of 0.200M HBr.A) Will all of the zinc dissolve?B) What will be the concentration of Br- in the resulting solution (after any reaction takes place)?arrow_forward7. The separate samples of nitric and acetic acids are both titrated with a 0.100 M solution of NaOH(aq). (Y) 25.0mL of 1.0 M HNO3(aq) (Z) 25.0 mL of 1.0 M CH3COOH(aq) Determine whether each of the following statements concerning this titration is true or false. (A) A larger volume of NaOH(aq) is needed to reach the equivalence point in the titration of HNO3 (B) The pH at the equivalence point in the HNO3 titration will be lower than the pH at the equivalence point in the CH3COOH titration (C) Phenolphthalein would be a suitable indicator for both titrations Group of answer choices a.) A) False B) True C) True b.) A) False B) False C) True c.) A) False B) True C) False d.) A) True B)True C)Truearrow_forward
- What are the acceptable levels of chloride in boiler water?arrow_forwardWrite the expression for the solubility product constant for Pb(OH)2.arrow_forward2. Using the procedure described in this module, a student determined the percent KHP in an impure sample of KHP. A 3.150-g sample of impure KHP required 41.50 mL of 0.1352M NaOH solution for titration. (a) Calculate the number of moles of NaOH required for the titration. (b) Calculate the number of moles of KHP present in the impure sample of KHP. (c) Calculate the number of grams of KHP present in the impure sample. (d) Calculate the percent of KHP in the impure sample, using Equation 8. Equation 8: percent KHP in the impure sample, % = ( mass of KHP in the sample,g/ mass of sample analyzed, g) (100%)arrow_forward
- 5. 18.0 g of zinc is added to 100. mL of 0.200M HBr.a) Will all of the zinc dissolve?b) What will be the concentration of Br- in the resulting solution(after any reaction takes place)?arrow_forwardWhen aqueous solutions of sodium chloride and silver nitrate are mixed, AgCl(s) is formed. When 1M HCL is added to the solution, the precipitate dissapears. EXPLAIN WHY THE PRECIPITATE DISAPEARS WHEN HCL IS ADDED.arrow_forwardQuestion 22 of 30 Submit A 185.0 mL sample of 1.200 M Pb(NO3)2 is mixed with 123.50 mL of 1.500 M NaCI, and the PbCl, precipitate is filtered from the solution. Then 200.0 mL of 3.000 M NaBr is added to the remaining solution, and the PbBr, precipitate is also collected and dried. What is the mass (in grams) of the PbBr, precipitate, assuming the yield in each precipitation step is 100%? 1 4 6. C 7 +/- x 10 0 Tap here or pull up for additional resources LO 00arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStaxChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning