\(CaCl_2\) का (75%) वियोजन है। यदि प्रेक्षित मोलर द्रव्यमान \(44.4,g,mol^{-1}\) है, तो वास्तविक मोलर द्रव्यमान कितना होगा?
\(CaCl_2\) is (75%) dissociated. If its observed molar mass is \(44.4,g,mol^{-1}\), what is the true molar mass?
Correct answer and explanation
C. \(111,g,mol^{-1}\)
Concept
\(CaCl_2\) के लिए \(i=1+2\alpha\)। / For \(CaCl_2\), \(i=1+2\alpha\).
Why this answer is correct
\(\alpha=0.75\), इसलिए (i=1+1.5=2.5)। / With \(\alpha=0.75\), (i=1+1.5=2.5).
Exam Tip
वास्तविक मोलर द्रव्यमान \(=2.5\times44.4=111,g,mol^{-1}\)। / True molar mass \(=2.5\times44.4=111,g,mol^{-1}\).
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