Question

Write a balanced equation for the proton-transfer reaction between HCN and SO42-. Indicate the conjugate pairs.

Options:
A. HCN + SO42- → CN- + HSO4-
B. HCN + SO42- → CN- + H2SO4
C. HCN + SO42- → CN- + H3SO4-
D. HCN + SO42- → CN- + H2O + SO4^2-

Answer 1

The balanced equation for the proton-transfer reaction between HCN and SO4^2- is HCN + SO4^2- → CN- + HSO4-. The conjugate pairs in this reaction are HCN/CN- and SO4^2-/HSO4-.

Step-by-step explanation:

The balanced equation for the proton-transfer reaction between HCN and SO42- is:

HCN + SO42- → CN- + HSO4-

In this reaction, HCN acts as a Brønsted-Lowry acid and donates a proton (H+) to the SO42- ion, which acts as a Brønsted-Lowry base. Therefore, the conjugate acid-base pairs in this reaction are HCN/CN- and SO42-/HSO4-.