\(PTHH:Zn+Cl_2\rightarrow ZnCl_2\)
Ban đầu : 0,45_0,35___________
Phứng :0,35______0,35___________
Sau phứng :0,15___0_____0,35___
Ta có :
\(n_{Cl2}=\frac{7,84}{22,4}=0,35\left(mol\right)\)
\(n_{Zn}=\frac{29,92}{65}=0,45\left(mol\right)\)
\(m_{muoi}=0,35.\left(65+71\right)=47,6\)
m chất rắn sau phản ứng là m kẽm dư
\(m_{Zn_{du}}=0,15.65=9,75\left(g\right)\)
\(Zn+AgNO_3\rightarrow Ag+Zn\left(NO_3\right)_2\)
0,15___________ 0,15___________
\(m_{Ag}=0,15.108=16,2\left(g\right)\)