Consider the following reaction equation:

SO4²-(aq) + 2H+(aq) + ye- → SO4²-(aq) + H2O(1).

The value of y in the equation is?

A. 2
B. 3
C. 4
D. 6

Correct Answer: Option A

A. 2

Explanation
from the reaction, the total charge on the left side = The total charge on the right side

-2 + 2 + y = -2 : y = -2 : y = 2