1.HCl的质量：(350/22.4)*36.5 = 570g
溶于水溶液的质量：1000+570=1570g
溶液的质量分数:570/1570=36.3%
溶液体积：1570/1.18=1330ml=1.33L
物质的量浓度=(350/22.4)/1.33=11.7mol/L
2.NaOH + HCl = NaOH + H2O
1 1
x 0.002mol
x=0.002mol
m(NaOH)=0.002*20*40=1.6g
烧碱的纯度:1.6/2 = 80%
3.2Cu + O2 = 2CuO
2 2
6.4/64 x
x=0.1mol
H2SO4 + CuO =CuSO4 + H2O
1 1
y 0.1mol
y=0.1mol
V=0.1/8=0.0125L=12.5ml