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JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties

यदि \(80\, g\) कॉपर सल्फेट ; \(CuSO _{4} \cdot 5 H _{2} O\) ) को अनायनित जल में घोलकर \(5\, L\) विलयन बनाया गया। कॉपर सल्फेट विलयन की सान्द्रता \(x \times 10^{-3}\) \(mol\, L ^{-1}\) है \(x\) का मान है............. 1 [परमाणु द्रव्यमान : \(Cu : 63.54\, u , S : 32 \,u , O : 16 \,u\), \(H : 1 \,u ]\)

  1. A \(49\)
  2. B \(80\)
  3. C \(64\)
  4. D \(17\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(64\)

Step-by-step Solution

Detailed explanation

Moles of \(\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}=\frac{80}{249.54}\) Molarity \(=\frac{80}{\frac{249.54}{5}}=64.117 \times 10^{-3}\) Nearest integer, \(\mathrm{x}=64\)
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