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JAMB Chemistry 2008 Objective — Question 22

Question 22 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2008 Objective paper, with the correct answer and a full explanation.

What is the oxidation state of carbon in HCOOH?

A. -1
B. +2Correct
C. -3
D. 0

Explanation

H = +1, O = -2. HCOOH. 1+C+(-2x2)+1=0. 1+C-4+1=0. C-2=0. C=+2.

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