JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties
The flucculation value of \(\mathrm{HCl}\) for arsenic sulphide sol. is \(30\; \mathrm{m}\; mole \;\mathrm{L}^{-1} .\) If \(\mathrm{H}_{2} \mathrm{SO}_{4}\) is used for the flocculation of arsenic sulphide, the amount, in grams, of \(\mathrm{H}_{2} \mathrm{SO}_{4}\) in \(250\; \mathrm{ml}\) required for the above purpose is (molecular mass of \(\left.\mathrm{H}_{2} \mathrm{SO}_{4}=98 \;\mathrm{g} / \mathrm{mol}\right)\)
- A \(0.37\)
- B \(0.67\)
- C \(0.87\)
- D \(0.63\)
Answer & Solution
Correct Answer
(A) \(0.37\)
Step-by-step Solution
Detailed explanation
\(1\; L\) solution requires \(30 \mathrm{m\;mol} \;\mathrm{HCl}\) \(250 \;\mathrm{ml}\) sol. will require \(7.5 \mathrm{m}\; \mathrm{mol} \;\mathrm{HCl}\) \({\text { or } 3.75 \mathrm{m\;mol}\; \mathrm{H}_{2} \mathrm{SO}_{4}}\)…
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