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0.378 g of an organic acid gave on combustion 0.264 g of carbon dioxide and 0.162 g of water vapour . Calculate the percentage of C and H. |
Answer» <html><body><p></p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/mass-1088425" style="font-weight:bold;" target="_blank" title="Click to know more about MASS">MASS</a> of <a href="https://interviewquestions.tuteehub.com/tag/organic-1138713" style="font-weight:bold;" target="_blank" title="Click to know more about ORGANIC">ORGANIC</a> compound =0.378 g <br/> Mass of `CO_(2)` formedc =0.264 g <br/> Mass of `H_(2)O` formed=0.162 g <br/> (i) <a href="https://interviewquestions.tuteehub.com/tag/percentage-13406" style="font-weight:bold;" target="_blank" title="Click to know more about PERCENTAGE">PERCENTAGE</a> of carbon <br/> <a href="https://interviewquestions.tuteehub.com/tag/44-316683" style="font-weight:bold;" target="_blank" title="Click to know more about 44">44</a> g of `CO_(2)` contains carbon =12 g <br/> 0.264 g of `CO_(2)` contains carbon =`12/44 xx 0.264 =0.072 g ` <br/> Percentage of hydrogen <br/> 18 g of `H_(2)O` contains hydrogen = 2g <br/> 0.16.2 of `H_(2)O` contains hydrogen =`2/18xx0.162 =0.018 g ` <br/> Percentage of hydrogen =`0.018/0.378 xx100 =4.76 % `</body></html> | |