JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties
When \(10\, \mathrm{~mL}\) of an aqueous solution of \(\mathrm{KMnO}_{4}\) was titrated in acidic medium, equal volume of \(0.1\) \(\mathrm{M}\) of an aqueous solution of ferrous sulphate was required for complete discharge of colour. The strength of \(\mathrm{KMnO}_{4}\) in grams per litre is \(......\,\times 10^{-2} .\) (Nearest integer) Atomic mass of \(\mathrm{K}=39, \mathrm{Mn}=55, \mathrm{O}=16]\)
- A \(94\)
- B \(152\)
- C \(316\)
- D \(656\)
Answer & Solution
Correct Answer
(C) \(316\)
Step-by-step Solution
Detailed explanation
\(\text { Let molarity of } \mathrm{KMnO}_{4}=\mathrm{x}\) \(\mathrm{KMnO}_{4}+\mathrm{FeSO}_{4} \rightarrow \mathrm{Fe}_{2}\left(\mathrm{SO}_{4}\right)_{3}+\mathrm{Mn}^{2+}\) \(\mathrm{n}=5 \quad \mathrm{n}=1\) (Equivalents of \(\mathrm{KMnO}_{4}\) reacted \()=\) (Equivalents…
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