дано
m(ZnCL2) = 70 g
m(H3PO4) = 50 g
m(Zn3(PO4)2)-?
M(ZnCL2) = 136 g/mol
n(ZnCL2) = m/M = 70 / 136 = 0.5147 mol
M(H3PO4) = 98 g/mol
n(H3PO4) = m/M = 50 / 98 = 0.51 mol
n(ZnCL2) > n(H3PO4)
3ZnCL2 + 2H3PO4-->Zn3(PO4)2+6HCL
M(Zn3(PO4)2) = 385 g/mol
2n(H3PO4) = n(Zn3(PO4)2)
n(Zn3(PO4)2) = 0.51 / 2 = 0.255 mol
m(Zn3(PO4)2) = n*M = 0.255 * 385 = 98.175 g
ответ 98.175 г
Объяснение:
дано
m(ZnCL2) = 70 g
m(H3PO4) = 50 g
m(Zn3(PO4)2)-?
M(ZnCL2) = 136 g/mol
n(ZnCL2) = m/M = 70 / 136 = 0.5147 mol
M(H3PO4) = 98 g/mol
n(H3PO4) = m/M = 50 / 98 = 0.51 mol
n(ZnCL2) > n(H3PO4)
3ZnCL2 + 2H3PO4-->Zn3(PO4)2+6HCL
M(Zn3(PO4)2) = 385 g/mol
2n(H3PO4) = n(Zn3(PO4)2)
n(Zn3(PO4)2) = 0.51 / 2 = 0.255 mol
m(Zn3(PO4)2) = n*M = 0.255 * 385 = 98.175 g
ответ 98.175 г
Объяснение: