Question

a)

If the Kb of a weak acid is 2.9 10*, the K, of its conjugate acid must be which of the following? 2.9.10 6.46 7.54 3.4 10-

b)

The hydronium ion concentration of a 0.50 mol/L solution of hydrocyanic acid, HCN(aq), is 1.4 x 10-5 mol/L. Use Weak Acid Inf

c)

An acetic acid-sodium acetate buffer solution is prepared. When small amounts of hydrochloric acid are added, the solution is

d)

The K, values for four acids are: H2CO3 4.5 x 10-2 HCOOH 1.8 x 10+ H,C,H, OH(COO); 7.1 x 10+ HCN 6.2 x 10-10 The pHs of 0.50

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