Question

Only 2 mL of \(KMnO_4\) solution of unknown molarity is required to reach the end point of a titration of 20 mL of oxalic acid (2 M) in acidic medium. The molarity of \(KMnO_4\) solution should be _____ M.

Answer 1

Correct answer is : 8

\(eq.(KMnO_4) = eq.(H_2C_2O_4)\)

\(M \times 2 \times 5 = 2 \times 20 \times 2\)

M = 8M