`n_Zn = m/M = 6,5/65 = 0,1 (mol) `
\(PTHH:Zn+H_2SO_4->ZnSO_4+H_2\)
Tỉ lệ: 1 : 1 : 1 : 1
n(mol) 0,1---->0,1-------------->0,1--->0,1
\(m_{H_2SO_4}=n\cdot M=0,1\cdot\left(2+32+16\cdot4\right)=9,8\left(g\right)\)
\(V_{H_2\left(dkt\right)}=n\cdot24=0,1\cdot24=2,4\left(l\right)\)
\(m_{ZnSO_4}=n\cdot M=0,1\cdot\left(65+32+16\cdot4\right)=16,1\left(g\right)\)
\(PTPU:Zn+H_2SO_4\rightarrow ZnSO_4+H_2\)
\(0,1:0,1:0,1:0,1\left(mol\right)\)
\(n_{Zn}=\dfrac{m}{M}=\dfrac{6,5}{65}=0,1\left(mol\right)\)
\(a,m_{H_2SO_4}=n.M=0,1.\left(2+32+16.4\right)=9,8\left(g\right)\)
\(b,V_{H_2}=n.22,4=0,1.22,4=2,24\left(l\right)\)
\(c,m_{ZnSO_4}=n.M=0,1.\left(65+32+16.4\right)=16,1\left(g\right)\)
Số mol Zn: \(n_{Zn}=\dfrac{m}{M}=\dfrac{6,5}{65}=0,1\left(mol\right)\)
Theo PTHH:
\(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\)
1 1 1 1 (mol)
0,1 0,1 0,1 0,1 (mol)
a) Khối lượng \(H_2SO_4\) cần dùng: \(m_{H_2SO_4}=n.M=0,1.98=9,8\left(g\right)\)
b) Thể tích khí hiđro thu được: \(V_{H_2}=n.24=0,1.24=2,4\left(l\right)\)
c) Khối lượng \(ZnSO_4\) thu được: \(m_{ZnSO_4}=n.M=0.1.161=16,1\left(g\right)\)