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

\(Na _{2} CO _{3} \cdot xH _{2} O\) के \(1.43 \,g\) को मिलाकर \(100 \,mL\) का एक विलयन बनाया गया। विलयन की नार्मलता \(0.1 \,N\) है। \(x\) का मान ............... है \(( Na\) की परमाणु संहति \(23 \,g / mol\) है।)

  1. A \(10\)
  2. B \(5\)
  3. C \(8\)
  4. D \(12\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(10\)

Step-by-step Solution

Detailed explanation

Molar mass of \(Na _{2} CO _{3} \cdot xH _{2} O\) \(\Rightarrow 23 \times 2+12+48+18 x\) \(\Rightarrow 46+12+48+18 x\) \(\Rightarrow(106+18 x )\) \(Eqwt =\frac{ M }{2}=(53+9 x )\) As \(n _{\text {factor }}\) in dissolution will be determined from net cationic or anionic charge;…
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