AP EAMCET · Chemistry · General Organic Chemistry
Using Kjeldahl's method over of a soil sample, the ammonia evolved could neutralize of . Then, the percentage of nitrogen present in the sample is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
H2SO4 + 2NH3→NH42SO4 25ml of one molar sulphuric acid = 25mmol By applying the mole-mole analysis, mole of ammonia consumed= 50mmol. Hence, the acid used for the ammonia adsorption = 50-25=25mmol Normality of sulphuric acid = 2N Mass of sampleW = 1g So,…
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