a, \(CuO+2HCl\rightarrow CuCl_2+H_2O\)

b, \(n_{HCl}=0,2.0,5=0,1\left(mol\right)\)

Theo PT: \(n_{CuO}=n_{CuCl_2}=\dfrac{1}{2}n_{HCl}=0,05\left(mol\right)\)

\(\Rightarrow m_{CuO}=0,05.80=4\left(g\right)\)

c, \(C_{M_{CuCl_2}}=\dfrac{0,05}{0,2}=0,25\left(M\right)\)

\(n_{HCl}=0,2.0,5=0,1\left(mol\right)\)

PTHH :

\(CuO+2HCl\rightarrow CuCl_2+H_2O\)

0,05         0,1         0,05

\(b,m_{CuO}=0,05.80=4\left(g\right)\)

\(c,C_{M\left(CuCl_2\right)}=\dfrac{0,05}{0,2}=0,25\left(M\right)\)

nHCl=0,3.2=0,6(mol)

a) PTHH: CuO +2 HCl -> CuCl2 + H2O

0,3_______________0,6___0,3(mol)

b) mCuO=0,3.80=24(g)

c) VddCuCl2=VddHCl=0,3(l)

=>CMddCuCl2=0,3/0,3=1(M)

d) m(muối)=0,3.135=40,5(g)

\(n_{CuO}=\dfrac{8}{80}=0,1\left(mol\right)\)

a) Pt : \(CuO+2HCl\rightarrow CuCl_2+H_2O|\)

              1           2               1          1

             0,1       0,2             0,1

Hiện tượng : CuO tan dần , tạo ra dung dịch có màu xanh lam 

b) \(n_{CuCl2}=\dfrac{0,1.1}{1}=0,1\left(mol\right)\)

⇒ \(m_{CuCl2}=0,1.135=13,5\left(g\right)\)

c) \(n_{HCl}=\dfrac{0,1.2}{1}=0,2\left(mol\right)\)

\(V_{ddHCl}=\dfrac{0,2}{0,5}=0,4\left(l\right)\)

 Chúc bạn học tốt

a,Hiện tượng: Sau phản ứng tạo thành dd màu xanh lam và có khi ko màu thoát ra

 \(n_{CuO}=\dfrac{8}{80}=0,1\left(mol\right)\)

PTHH: CuO + 2HCl → CuCl₂ + H₂O

Mol:      0,1       0,2         0,1

b, \(m_{CuCl_2}=0,1.135=13,5\left(g\right)\)

c, \(V_{ddHCl}=\dfrac{0,2}{0,5}=0,4\left(l\right)\)

CuO+2HCl->CuCl2+H2O  => đồng tan tạo dd màu xanh lam

0,1-----0,2-----0,1-------0,1

n CuO=8\80=0,1 mol

=>m CuCl2=0,1.135=13,5g

=>VHCl=0,2\0,5=0,4l =400ml

Bài 9 : 

\(n_{CuO}=\dfrac{4}{80}=0,05\left(mol\right)\)

\(CuO+2HCl\rightarrow CuCl_2+H_2O\)

0,05--->0,1-------->0,05 

a) \(C_{MddHCl}=\dfrac{0,1}{0,1}=1\left(M\right)\)

b) \(m_{CuCl2}=0,05.135=6,75\left(g\right)\)

c) \(C_{MCuCl2}=\dfrac{0,05}{0,1}0,5\left(M\right)\)

Câu 10 : 

\(n_{FeO}=\dfrac{3,6}{72}=0,05\left(mol\right)\)

\(FeO+2HCl\rightarrow FeCl_2+H_2O\)

0,05-->0,1------->0,05

\(m_{ddHCl}=\dfrac{0,1.36,5}{10\%}100\%=36,5\left(g\right)\)

\(m_{ddspu}=3,6+36,5=40,1\left(g\right)\)

\(C\%_{FeCl2}=\dfrac{0,05.127}{40,1}.100\%=15,84\%\)

Câu 10 :

\(n_{FeO}=\dfrac{3,6}{72}=0,05\left(mol\right)\)

PTHH :

\(FeO+2HCl\rightarrow FeCl_2+H_2O\)

0,05      0,1           0,05       0,05

\(m_{ddHCl}=\dfrac{0,1.36,5.100}{10}=36,5\left(g\right)\)

\(C\%_{FeCl_2}=\dfrac{0,05.127}{\left(3,6+36,5\right)}.100\%=15,84\%\)

\(a)n_{CuO}=\dfrac{8}{80}=0,1mol\\ CuO+2HCl\rightarrow CuCl_2+H_2O\\ n_{CuCl_2}=n_{Cu}=0,1mol\\ m_{CuCl_2}=0,1.135=13,5g\\ b)n_{HCl}=0,1.2=0,2mol\\ C_{M_{HCl}}=\dfrac{0,2}{0,2}=1M\\ c)C_{M_{CuCl_2}}=\dfrac{0,1}{0,2}=0,5M\)

\(n_{CuO}=\dfrac{4}{80}=0,05\left(mol\right)\\a, CuO+H_2SO_4\rightarrow CuSO_4+H_2O\\ n_{CuSO_4}=n_{H_2SO_4}=n_{CuO}=0,05\left(MOL\right)\\ b,m_{CuSO_4}=0,05.160=8\left(g\right)\\ c,V_{ddH_2SO_4}=\dfrac{0,05}{0,5}=0,1\left(l\right)\\ d,V_{ddCuSO_4}=V_{ddH_2SO_4}=0,1\left(l\right)\\ C_{MddCuSO_4}=\dfrac{0,05}{0,1}=0,5\left(M\right)\)

Ta có: \(n_{CuO}=\dfrac{8}{80}=0,1\left(mol\right)\)

PT: \(CuO+2HCl\rightarrow CuCl_2+H_2O\)

a, Theo PT: \(n_{CuCl_2}=n_{CuO}=0,1\left(mol\right)\Rightarrow m_{CuCl_2}=0,1.135=13,5\left(g\right)\)

b, \(n_{HCl}=2n_{CuO}=0,2\left(mol\right)\Rightarrow C_{M_{HCl}}=\dfrac{0,2}{0,2}=1\left(M\right)\)

\(n_{FeO}=a\left(mol\right),n_{CuO}=b\left(mol\right)\)

\(m_{hh}=72a+80b=19.2\left(g\right)\left(1\right)\)

\(FeO+H_2SO_4\rightarrow FeSO_4+H_2O\)

\(CuO+H_2SO_4\rightarrow CuSO_4+H_2O\)

\(n_{H_2SO_4}=a+b=0.25\left(mol\right)\left(2\right)\)

\(\left(1\right),\left(2\right):a=0.1,b=0.15\)

\(m_{FeO}=0.1\cdot72=7.2\left(g\right)\)

\(m_{CuO}=12\left(g\right)\)

\(C_{M_{FeSO_4}}=\dfrac{0.1}{0.25}=0.4\left(M\right)\)

\(C_{M_{CuSO_4}}=\dfrac{0.15}{0.25}=0.6\left(M\right)\)