\(n_{H_2}=\dfrac{33,6}{22,4}=1,5\left(mol\right)\)
a. PTHH: \(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
Theo PTHH: \(n_{Fe}=n_{H_2}=1,5\left(mol\right)\)
\(\Rightarrow m_{Fe}=56\cdot1,5=84\left(g\right)\)
b. Đổi: \(500ml=0,5l\)
\(CM_{H_2SO_4}=\dfrac{1,5}{0,5}=3M\)
c. \(2H_2+O_2\rightarrow2H_2O\)
Theo PTHH: \(n_{O_2}=\dfrac{1}{2}n_{H_2}=\dfrac{1}{2}\cdot1,5=0,75\left(mol\right)\)
\(\Rightarrow V_{O_2}=0,75\cdot22,4=16,8\left(l\right)\)
c, \(2H_2+O_2 \rightarrow2H_2O\)
\(n_{H_2}=\dfrac{33,6}{22,4}=1,5(mol) \Rightarrow n_{O_2}=0,75(mol)\)
\(V_{O_2}=22,4.0,75=16,8(l)\)
a) Fe+H2SO4---->FeSO4+H2(1)
nH2=33,6:22,4=1,5 mol
Theo PT(1):nFe=nH2=1,5 mol
=>mFe=56.1,5=84g
b)TheoPT(1):nH2SO4=nH2=1,5 mol
=>CM(H2SO4)=1,5:0,5=3 M
c)2H2+O2---->2H2O(2)
TheoPT(2):nO2=1/2nH2=1/2.1,5=0,75mol
=>VO2=22,4.0,75=16,8l