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0,2 x
H2SO4+K2CO3=K2SO4+CO2+H2O
1 1
m(K2CO3)=m(р-ра)хω=110х0,25=27,5 г.
n(K2CO3)=m/M=27,5÷138=0,2 моль
n(CO2)=x=0,2х1÷1=0,2моль
V(CO2)=Vmхn=22,4л./моль×0,2моль=4,48л.
ответ: 4,48л.
Поделитесь своими знаниями, ответьте на вопрос:
Вычислите массу 60%-ной азотной кислоты, которую можно получить из 68 кг аммиака, при выходе продукта реакции от теоретически возможного, равном 70%.
M(NH₃)=17
M(HNO₃)=63
n(NH₃)=68\17=4 моль
n(HNO₃)=4 моль
m(HNO₃)=n*M=4*63=252 кг теоретически
m(HNO₃) практически =252*0,7=176,4 кг чистого вещества
m раствора(HNO₃) =176,4 *100:60=294 кг 60%-ной азотной кислоты