Which one of the following statements regarding K_w is false? K_w changes with t

Question

Which one of the following statements regarding K_w is false? K_w changes with temperature. The value of K_w is always 1.0 times 10^-14. K_w is known as the ion product of water. The value of K_w shows that water is a weak acid. pK_w is 14.00 at 25 degree C. The hydride ion, H^-, is a stronger base than the hydroxide ion. OH^-. The product(s) of the reaction of hydride ion with water is/are____. OH^- (aq) + H_2 (g) OH^- (aq) + 2H^+ (aq) H_3O^+ (aq) no reaction occurs H_2O_2(aq) Of the following acids,_____is not strong acid. HCIO_4 HNO_2 H_2SO_4 HNO_3 HCl Of the acids in the table below,____is the strongest acid. HOAc and HCHO_2 HCHO_2 HCIO HF HOAc HA is a weak acid. Which equilibrium corresponds to the equilibrium constant K_b for A^-? A- (aq) + OH^-(aq) HOA^2-(aq) HA(aq) + OH^-(aq) H_2O(l) + H^+(aq) A^-(aq) + H_2O(l) HA (aq) + OH^-(aq) A-(aq) + H_3O^+(aq) HA(aq) + H_2O(l) HA(aq) + H_2O(l) H_2A^+(aq) + OH-(aq)

Explanation / Answer

11. False: (B) ( because, only at 25 oC)

12. (A)

13. (B) (because of more pKa = 3.29)

14. (D) (more Ka stronger the acid)

15. (c)

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.