Problem: The Ka for hydrocyanic acid, HCN, is 6.8 × 10–10. What is Kb for the cyanide ion, CN-?A) 1.5 × 10–11B) 1.5 × 10–5C) 1.5 × 109D) 6.8 × 1010E) 6.8 × 10–24

FREE Expert Solution

For this problem, we have to calculate the Kof CN- using the Kat 6.8x10-10

Recall that Kand Kis related using the autoionization constant (1x10-14):

Kw = Ka × Kb

View Complete Written Solution
Problem Details

The Ka for hydrocyanic acid, HCN, is 6.8 × 10–10. What is Kb for the cyanide ion, CN-?

A) 1.5 × 10–11

B) 1.5 × 10–5

C) 1.5 × 109

D) 6.8 × 1010

E) 6.8 × 10–24

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Ka and Kb concept. You can view video lessons to learn Ka and Kb. Or if you need more Ka and Kb practice, you can also practice Ka and Kb practice problems.