यदि \( \mathrm{Na}_{2} \mathrm{SO}_{4} \) की वियोजन की मात्रा \( \alpha \) हो तब अणुभार की गणना ...

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यदि \( \mathrm{Na}_{2} \mathrm{SO}_{4} \) की वियोजन की मात्रा \( \alpha \) हो तब अणुभार की गणना करने के लिए प्रयुक्त वांट हॉफ कारक (i) होगा-
(A) \( 1-2 \alpha \)
(B) \( 1+2 \alpha \)
(C) \( 1-\alpha \)
(D) \( 1+\alpha \)
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