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एक कार्बनिक यौगिक के 0.75 ग्राम से केल्डाल क्रिया द्वारा निकली अमोनिया 0.25 N सल्फ्यूरिक अम्ल के 30 मिली को पूर्ण उदासीन करती है। यौगिक में नाइट्रोजन का प्रतिशत ज्ञात कीजिए।

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अमोनिया के मिली- तुल्यांक =`H_2SO_4` के मिली- तुल्यांक=`0.25xx30`=7.5
या N x V =7.5
यौगिक में नाइट्रोजन का प्रतिशत =`(1.4 xx N xxV)/(W_"यौगिक")=(1.4xx7.5)/0.75`=14%

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