Please answer the following multiple choice correctly, thanks so much! 13. A sol
ID: 882240 • Letter: P
Question
Please answer the following multiple choice correctly, thanks so much!
13. A solution is prepared by adding 0.10 mol of sodium sulfide, Na2S , to 1.00 L of water. Which statement about the solution is correct? a. The solution is basic. b. The solution is neutral, c. The solution is acidic. d. The concentration of sodium ions and sulfide ions will be identical. e. The concentration of sulfide ions will be greater than the concentration of sodium ions. 14. The solution is neutral when CH4 is added into water. What happens when CH3 -is added to water? a. Nothing happens when CH3- is added to water, b. CH3- loses a proton to form CH2^-2 when added to water. C. CH3- reacts with water to form CH3OH and H+. d. CH3- removes a proton from water to form CH4 and 0H-. 15. The hydrated Al^3+ ion, Al(H2O)6^3+, is a weak acid in water. What are the products of its reaction with H2O? 16. An aqueous solution as prepared by dissolving the salt formed by the neutralization of a weak acid by a weak base. Which statement about the solution is correct? a. The solution is strongly basic. b. The solution is weakly basic. c. The solution is neutral. d. The solution is acidic. e. The values for Ka and Kb (or the species in solution must be known before a prediction can be made. 17. According to Bronsted and Lowry, which one of the following is not a conjugate acid- base pair?Explanation / Answer
Solution :-
Q13 ) correct answer is option ‘a’ that is solution is basic because Na2S is the salt of weak acid strong base therefore it will form basic solution.
Q14) correct answer is the option ‘d’ that is CH3- will react with water to form CH4 and OH-
Because CH3- will act as base.
Q15 ) Correct answer is option ‘a’ that is Al(H2O)6^3+ will react with water to form the Al(H2O)5OH^2+ and H3O+
Q16 ) correct answer is the option ‘e’ that is information of the ka and kb values of the acid and base needed to predict whether they will form acidic or basic solution.
Q17) correct answer is the option ‘e’
That is H2 is not conjugate acid