Question

Consider the following reaction: $6NaOH +3cl_{2} \to5Nacl +A+3H_{2}O$ What is the oxidation number of chlorine in A?

• A. 5
• B. -1
• C. 3
• D. 1

Answer 1

Answer: (A)

5

Answer 2

The correct answer is A:5
Balance the equation $6NaOH+3cl_{2} \to5NaCl +A+3H_{2}O$
to get, $6NaOH+3cl_{2} \to5NaCl +NaClO_{3}+3H_{2}O$
$\therefore$ A is $NaClO_{3} ,$ where Cl is in +5 oxidation state