COMEDK · Chemistry · 9. Redox Reactions
\(0.5 \mathrm{~g}\) of an acid is neutralised by \(40 \mathrm{cc}\) of \(0.125 \mathrm{~N} \mathrm{NaOH}\). The equivalent mass of the acid is
- A 50
- B 100
- C 40
- D 80
Answer & Solution
Correct Answer
(B) 100
Step-by-step Solution
Detailed explanation
Equivalent moles of \(\mathrm{NaOH}=\) Equivalent moles of acid \(N_{1} V_{1}=\frac{\text { Weight }}{\text { Equivalent mass }}\) \(40 \times 10^{-3} \times 0.125=\frac{0.5}{\text { Equivalent mass }}\) \(\therefore\) Equivalent mass of acid \(=100\)
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