Question

When chlorine reacts with hot and conc. NaOH, the products formed are

• A. NaCl, NaClO$_3$, H$_2$O
• B. NaCl, NaOCl, H$_2$O
• C. NaCl, H$_2$O only
• D. NaOCl, H$_2$O

Hint:

Cold NaOH gives NaOCl, whereas hot and concentrated NaOH gives NaClO$_3$.

Answer 1

The Correct Option is A

Step 1: Understanding the reaction mechanism.
Chlorine reacts with hot concentrated NaOH as follows:
\[ 3Cl_2 + 6NaOH \rightarrow 5NaCl + NaClO_3 + 3H_2O \] This forms sodium chloride (NaCl), sodium chlorate (NaClO$_3$), and water.