a)
$CuO + H_2SO_4 \to CuSO_4 + H_2O$
Theo PTHH :
$n_{CuO} = n_{H_2SO_4} = \dfrac{98.40\%}{98} = 0,4(mol)$
$m = 0,4.80 = 32(gam)$
b)
$m_{dd\ sau\ pư} = 32 + 98 = 130(gam)$
$n_{CuSO_4} = n_{H_2SO_4} = 0,4(mol)$
$C\%_{CuSO_4} = \dfrac{0,4.160}{130}.100\% = 49,23\%$
a) \(m_{H_2SO_4}=98.40\%=39,2\left(g\right)\Rightarrow n_{H_2SO_4}=\dfrac{39,2}{98}=0,4\left(mol\right)\)
PTHH: CuO + H2SO4 → CuSO4 + H2O
Mol: 0,4 0,4 0,4
\(m_{CuO}=0,4.80=32\left(g\right)\)
b) mdd sau pứ = 32 + 98 = 130 (g)
\(C\%_{ddCuSO_4}=\dfrac{0,4.160.100\%}{130}=49,23\%\)