Combustion of a 0.9835-g sample of a compound containing onl
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Combustion of a 0.9835-g sample of a compound containing only carbon,hydrogen,and oxygen produced 1.900 g of CO2 and 1.070 g of H2O.
a.What isthe empirical formula of the compound?
a.What isthe empirical formula of the compound?
化合物中含有C的质量:1.900*(12/44)=0.5182g
化合物中含有H的质量:1.070*(2/18)=0.1189g
化合物中含有O的质量:0.9835-0.5182-0.1189=0.3464g
则:分子式中系数之比:
0.5182/12 :0.1189/1 :0.3464/16
=0.04318 :0.1189 :0.02165
=4:11:2
所以,经验化学式为:C4H11O2或者[C4H11O2]n
化合物中含有H的质量:1.070*(2/18)=0.1189g
化合物中含有O的质量:0.9835-0.5182-0.1189=0.3464g
则:分子式中系数之比:
0.5182/12 :0.1189/1 :0.3464/16
=0.04318 :0.1189 :0.02165
=4:11:2
所以,经验化学式为:C4H11O2或者[C4H11O2]n
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