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Консультация № 189519
29.05.2016, 06:18
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
В процессе получения титана возможно использование реакции угля с диоксидом титана (IV) TiO2 + 2C = 2Ti + 2CO . Теплота, необходимая для осуществления процесса, обеспечивается горением углерода. Если энтальпии образования диоксида титана (IV), угарного и углекислого газов равны: -943,9 , -111 и -394 кДж/моль соответственно, то для получения 960 кг титана потребуется_______ кг углерода. ( Потерями углерода на побочные процессы пренебречь; ответ привести с точностью до целого значения; Ar(Ti)=48).
В процессе получения титана возможно использование реакции угля с диоксидом титана (IV) TiO2 + 2C = 2Ti + 2CO . Теплота, необходимая для осуществления процесса, обеспечивается горением углерода. Если энтальпии образования диоксида титана (IV), угарного и углекислого газов равны: -943,9 , -111 и -394 кДж/моль соответственно, то для получения 960 кг титана потребуется_______ кг углерода. ( Потерями углерода на побочные процессы пренебречь; ответ привести с точностью до целого значения; Ar(Ti)=48).
Обсуждение
02.06.2016, 19:46
общий
это ответ
Здравствуйте, shumakh78!
TiO2+2C=Ti+2CO
[$916$]H=2[$183$](-111)-(943,9)=721,9 кДж/моль
если при реакции с диоксидом титана углерод окисляется до CO, при реакции угля с добавляемым в топку кислородом в этих условиях также должен образовываться угарный газ.
2C+O2=2CO
[$916$]H=-222 кДж/моль
Таким образом, для восстановления 1 моль титана требуется 2 моль углерода на реакцию с TiO2 и 2[$183$]721,9/222=6,5 моль углерода на поддержание теплоты, итого 8,5 моль углерода.
Для получения 960кг/48г/моль=20 кмоль титана нужно 20[$183$]8,5=170 кмоль или 170кмоль[$183$]12г/моль=2040 кг угля
TiO2+2C=Ti+2CO
[$916$]H=2[$183$](-111)-(943,9)=721,9 кДж/моль
если при реакции с диоксидом титана углерод окисляется до CO, при реакции угля с добавляемым в топку кислородом в этих условиях также должен образовываться угарный газ.
2C+O2=2CO
[$916$]H=-222 кДж/моль
Таким образом, для восстановления 1 моль титана требуется 2 моль углерода на реакцию с TiO2 и 2[$183$]721,9/222=6,5 моль углерода на поддержание теплоты, итого 8,5 моль углерода.
Для получения 960кг/48г/моль=20 кмоль титана нужно 20[$183$]8,5=170 кмоль или 170кмоль[$183$]12г/моль=2040 кг угля
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