At 50 degree C, the water ionization constant, K_W, is 5.48 x 10^-14. What is th

Question

At 50 degree C, the water ionization constant, K_W, is 5.48 x 10^-14. What is the H_3O^+ concentration in pure water at this temperature? Which ONE of the following cannot act as a Lewis acid or a Bronsted-Lowry acid? Which of the following solutions has the highest hydroxide ion concentration? A solution is prepared by diluting 0.055 moles of nitric acid (HNO_3) with water to a volume of 1.75 L. What is the pH of the solution? What is the solubility product expression for zinc phosphate, Zn_3(P0_4)_2?

Explanation / Answer

24. ionization constant Kw = [OH] [ H+]

[OH] =[ H+] since water is nutral so,

Kw = [ H+]2

[ H+] = 2.34 *10-7    ans D

25. According to lewis substace which accept electron is acid and substance which give proton is acid in bronsted concept. now, S2- does not have the proton to give so it is not bronsted acid and it can give electron it is not lewis acid it is lewis base so. answer is E

26. solution which have lower pH have higher concentration of OH- here pure water have higher pH = 7 so , D is answer

27. molarity of HNO3 = ( .055 / 1.75 ) = .031 M

H+ ion cncentration = .031 M

pH = -log.031 = 1.5 ans D

28. Zn3(PO4)2 = 3 Zn2+ + 2 PO4-

Ksp = [3 Zn2+]3 [ 2 PO4-]2 ans B

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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