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Консультация № 160999
20.02.2009, 15:06
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Медь часто выплавляют из серной руды Cu2S, при этом выделяется SO2. В США ежегодно ролучают 1,6 млн.тонн меди. Если допустить, что всю эту медь получили из Cu2S, то сколько тонн SO2 выделилось при этом?
Обсуждение
Неизвестный
20.02.2009, 17:36
общий
это ответ
Здравствуйте, Cherry87!
Медь выплавляется по реакции
Cu2S + 2O2 = 2CuO + SO2
CuO далее подвергается восстановлению(по какой реакции - нам уже не важно, но в результате восстановления 1 моль CuO получается 1 моль меди), а SO2 выделяется.
Таким образом, получается, что на 2 моль меди приходится 1 моль SO2. Ежегодно в США выплавляют 1.6*106 тонн = 1.6*1012 г меди, что в переводе на количество вещества означает 1.6*1012 г / 64 г/моль = 2.5*1010 моль меди. Следовательно, при этом вываливается вдвое меньшее количество SO2, то есть 1.25*1010 моль. Масса такого количества SO2:
1.25*1010 моль * 64 г/моль = 8*1011 г = 8*105 тонн.
С уважением, Товарищ Бородин
Медь выплавляется по реакции
Cu2S + 2O2 = 2CuO + SO2
CuO далее подвергается восстановлению(по какой реакции - нам уже не важно, но в результате восстановления 1 моль CuO получается 1 моль меди), а SO2 выделяется.
Таким образом, получается, что на 2 моль меди приходится 1 моль SO2. Ежегодно в США выплавляют 1.6*106 тонн = 1.6*1012 г меди, что в переводе на количество вещества означает 1.6*1012 г / 64 г/моль = 2.5*1010 моль меди. Следовательно, при этом вываливается вдвое меньшее количество SO2, то есть 1.25*1010 моль. Масса такого количества SO2:
1.25*1010 моль * 64 г/моль = 8*1011 г = 8*105 тонн.
С уважением, Товарищ Бородин
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