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nFe = 0.5 (mol)
nZn = 0.5 (mol)
Fe + 2HCl → FeCl2 + H2↑
0.5 1 0.5
Zn + 2HCl → ZnCl2 + H2↑
0.5 1 0.5
=> Tổng nH2 = 1 (mol) => VH2 = 22.4x1=22.4 (l)
b) Tổng nHCl = 2 (mol) => mHCl = 2x36.5=73 (g)
a.b.\(n_{Mg}=\dfrac{3,6}{24}=0,15mol\)
\(Mg+2HCl\rightarrow MgCl_2+H_2\)
0,15 0,3 0,15 ( mol )
\(V_{H_2}=0,15.22,4=3,36l\)
\(m_{HCl}=0,3.36,5=10,95g\)
c.\(n_{H_2}=0,15.60\%=0,09mol\)
\(Ag_2O+H_2\rightarrow\left(t^o\right)2Ag+H_2O\)
0,09 0,18 ( mol )
\(m_{Ag}=0,18.108=19,44g\)
\(a.n_{Mg}=\dfrac{3,6}{24}=0,15\left(mol\right)\\ Mg+2HCl\rightarrow MgCl_2+H_2\\ TheoPT:n_{H_2}=n_{Mg}=0,15\left(mol\right)\\ \Rightarrow V_{H_2}=0,15.22,4=3,36\left(l\right)\\ b.TheoPT:n_{HCl}=2n_{Mg}=0,3\left(mol\right)\\ \Rightarrow m_{Mg}=0,3.36,5=10,95\left(g\right)\\ c.n_{H_2\left(pứ\right)}=0,15.60\%=0,054\left(g\right)\\ H_2+Ag_2O-^{t^o}\rightarrow2Ag+H_2O\\ n_{Ag}=2n_{H_2}=0,108\left(mol\right)\\ \Rightarrow m_{Ag}=0,108.108=11,664\left(g\right)\)
a) PTHH: Zn+2HCl-------to----> ZnCl2+H2
nZn=\(\dfrac{m}{M}=\dfrac{32,5}{65}=0,5\left(mol\right)\)
---> \(n_{H_2}\)=0,5(mol)
b)\(V_{H_2}\)=n.22,4=0,5.22,4=11,2(lít)
c)\(n_{ZnCl_2}\)=0,5(mol)
\(m_{ZnCl_2}\)=n.M=0,5.136=68(gam)
nFe = 16,8/56 = 0,3 (mol)
PTHH: Fe + 2HCl -> FeCl2 + H2
Mol: 0,3 ---> 0,6 ---> 0,3 ---> 0,3
VH2 = 0,3 . 24,79 = 7,437 (l)
mHCl = 0,6 . 36,5 = 21,9 (g)
PTHH: CuO + H2 -> (t°) Cu + H2O
Mol: 0,3 <--- 0,3 ---> 0,3
mCu = 0,3 . 64 = 19,2 (g)
mFe = 16,8: 56 =0,3(mol)
pthh : Fe + 2HCl --> FeCl2 + H2 (1)
0,3 ->0,6-----------------> 0,3 (mol)
=> VH2 (đkc) = 0,3 . 24,79 ( l)
=> mHCl = 0,6 . 35,5 = 21,9 (g)
pthh : CuO + H2 -t--> Cu+ H2O
0,3<-----0,3 (mol)
=>mCu = 0,3 . 64 = 19,2 (g)
\(n_{Zn}=\dfrac{13}{65}=0,2\left(mol\right)\)
PTHH: Zn + 2HCl ---> ZnCl2 + H2
Mol: 0,2 0,4 0,2
\(m_{HCl}=0,4.36,5=14,6\left(g\right)\)
\(V_{H_2}=0,2.22,4=4,48\left(l\right)\)
a) \(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\)
PTHH: Mg + 2HCl --> MgCl2 + H2
_____0,1--->0,2------->0,1---->0,1
=> mHCl = 0,2.36,5 = 7,3(g)
b) mMgCl2 = 0,1.95 = 9,5 (g)
c) VH2 = 0,1.22,4 = 2,24(l)
a) \(n_{Fe}=\dfrac{28}{56}=0,5\left(mol\right);n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\)
PTHH: Fe + 2HCl → FeCl2 + H2
Mol: 0,5 1 0,5
PTHH: Zn + 2HCl → ZnCl2 + H2
Mol: 0,5 1 0,5
\(V_{H_2}=\left(0,5+0,5\right).22,4=22,4\left(l\right)\)
b, \(m_{HCl}=\left(1+1\right).36,5=73\left(g\right)\)