Question

3.55g of bleaching powder when treated with acetic acid and excess of Kl liberated iodine which
required 60mL of 0.5N sodium thiosulphate solution. The percentage of available chlorine in the
sample is

Answer 1

3.55g of bleaching powder when treated with acetic acid and excess of Kl liberated iodine which
required 60 mL of 0.5N sodium thiosulphate solution. The percentage of available chlorine in the
sample is:

% of available Chlorine =

$$\begin{gathered} \frac{3.55\times \mathrm{M}\times \mathrm{V}}{\mathrm{W}} \\ \frac{3.55\times 0.5\times 60}{3.55}=30\% \end{gathered}$$