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

\(100\, mL\) દ્રાવણ \(1.43\, g\) of \(Na _{2} CO _{3} \cdot xH _{2} O \) ઉમેરીને બનાવવામાં આવ્યું હતું. દ્રાવણની નોર્માલિટી \(0.1\) \(N.\) છે. \(x\)નું મૂલ્ય......... (\(Na\)નું પરમાણ્વીય દળ \(23\, g / mol\) છે ) :

  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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