设铝质量为x,则铁为4.6-x
2Al + 3H2SO4=== Al2(SO4)3 + 3H2↑ Fe + 2H+ = Fe2+ + H2↑
54g 67.2L 56g 22.4L
x a 4.6-x b
a=67.2x/54 b=22.4*(4.6-x)/56
根据a+b=3.36L
可得x=1.8g,铁质量=4.6-1.8=2.8g
设铝质量为x,则铁为4.6-x
2Al + 3H2SO4=== Al2(SO4)3 + 3H2↑ Fe + 2H+ = Fe2+ + H2↑
54g 67.2L 56g 22.4L
x a 4.6-x b
a=67.2x/54 b=22.4*(4.6-x)/56
根据a+b=3.36L
可得x=1.8g,铁质量=4.6-1.8=2.8g