дано
V(CL2) = 4.48 L
m(HCL)-?
MnO2+4HCL-->CL2+MgCL2+2H2O
n(CL2) = V(CL2) / Vm = 4.48 / 22.4 = 0.2 mol
4n(HCL) = n(CL2)
n(HCL) = 0.2*4 = 0.8 mol
M(HCL) = 36.5 g/mol
m(HCL) = n*M = 0.8 * 36.5 = 29.2 g
ответ 29.2 г
дано
V(CL2) = 4.48 L
m(HCL)-?
MnO2+4HCL-->CL2+MgCL2+2H2O
n(CL2) = V(CL2) / Vm = 4.48 / 22.4 = 0.2 mol
4n(HCL) = n(CL2)
n(HCL) = 0.2*4 = 0.8 mol
M(HCL) = 36.5 g/mol
m(HCL) = n*M = 0.8 * 36.5 = 29.2 g
ответ 29.2 г