2hcl+zn=zncl2+h2
m(hcl)=50*0.20=10 g
n(hcl)=0.27
n(hcl)=1/2 n(zncl2)
m(zncl2)=0.137*136=18.6g
Объяснение:
дано
m(ppa HCL) = 50 g
W(HCL) = 20 %
m(ZnCL2)-?
m(HCL) = 50 * 20% / 100%= 10 g
Zn+2HCL-->ZnCL2+H2
M(HCL) = 36.5 g/mol
n(HCL) =m/M = 10 / 36.5 = 0.274 mol
2n(HCL) = n(ZnCL2)
n(ZnCL2) = 0.274 /2 = 0.137 mol
M(ZnCL2) = 136 g/mol
m(ZnCL2) = n*M = 0.137 * 136 = 18.632 g
ответ 18.632 г
2hcl+zn=zncl2+h2
m(hcl)=50*0.20=10 g
n(hcl)=0.27
n(hcl)=1/2 n(zncl2)
m(zncl2)=0.137*136=18.6g
Объяснение:
дано
m(ppa HCL) = 50 g
W(HCL) = 20 %
m(ZnCL2)-?
m(HCL) = 50 * 20% / 100%= 10 g
Zn+2HCL-->ZnCL2+H2
M(HCL) = 36.5 g/mol
n(HCL) =m/M = 10 / 36.5 = 0.274 mol
2n(HCL) = n(ZnCL2)
n(ZnCL2) = 0.274 /2 = 0.137 mol
M(ZnCL2) = 136 g/mol
m(ZnCL2) = n*M = 0.137 * 136 = 18.632 g
ответ 18.632 г
Объяснение: