\(2Cu+O_2\rightarrow2CuO\)
\(n_{Cu}=\dfrac{m}{M}=\dfrac{48}{64}=0,75\left(mol\right)\)
Theo PTHH :
\(n_{O_2}=\dfrac{1}{2}n_{Cu}=\dfrac{1}{2}.0,75=0,375\left(mol\right)\)
\(\Rightarrow V_{O_2}=n.22,4=0,375.22,4=8,4\left(l\right)\)
Theo PTHH :
\(n_{CuO}=n_{Cu}=0,75\left(mol\right)\)
\(\Rightarrow m_{CuO}=n.M=0,75.80=60\left(g\right)\)
PTHH: 2Cu+O2--->2CuO
nCu= 0,75 mol
Theo pt: nO2=\(\dfrac{1}{2}.nCu=\dfrac{1}{2}.0,75=0,375\) mol
=> VO2= 0,375.22,4= 8,4 (l)
Theo pt: nCuO=nCu=0,75 mol
=> mCuO=0,75.80= 60(g)
2Cu + O2 -> 2CuO
nCu=0,75(mol)
Theo PTHH ta có:
nO2=\(\dfrac{1}{2}\)nCu=0,375(mol)
nCuO=nCu=0,75(mol)
VO2=22,4.0,375=8,4(lít)
mCuO=80.0,75=60(g)
PT: 2Cu + O\(_2\) \(\rightarrow\)2CuO
n\(_{Cu}\)=\(\dfrac{48}{64}\)=0,75(mol)
Theo PT ta có:
n\(_{O_2}\)=\(\dfrac{1}{2}\)n\(_{Cu}\)=\(\dfrac{1}{2}\).0,75 = 0.375(mol) \(\Rightarrow\) V\(_{O_2}\)=22,4.0.375=8,4(l)
n\(_{CuO}\)=n\(_{Cu}\)=0,75(mol) \(\Rightarrow\) m\(_{CuO}\)=0,75.80=60(g)
PTHH: 2Cu+ O2--->2CuO
nCu =48:64=0,75mol
theo PTHH cứ 2 mol Cu cần 1 mol O2
0,75 mol Cu cần 0,375 mol O2
VO2=0,375.22,4=8,4(l)
theo PTHH; 2 mol Cu tạo tành 2mol CuO
0,75 mol Cu tạo thành 0,75 mol CuO
mCuO=0,75.80=60g