дано
m(Al+Cu) = 60 g
V(H2) = 2.24 дм3 = 2.24 L
m(Cu) : m(Al)
Cu+HCL ≠
2Al+6HCL-->2AlCL3+3H2
n(H2) = V(H2) / Vm = 2.24 / 22.4 = 0.1 mol
2n(Al) = 3n(H2)
n(Al) = 2*0.1 / 3 = 0.067 mol
M(Al) = 27 g/mol
m(Al) =n*M = 0.067 * 27 = 1.809 g
m(Cu) = m(Cu+Al) - m(Al) = 60 - 1.809 = 58.191 g
m(Al) : m(Cu) = 1.809*27 : 58.191 *64
m(Al) : m(Cu) = 48.843 : 3724.224 = 1: 76.25
ответ m(Al) : m(Cu) =1 : 76.25
Объяснение:
дано
m(Al+Cu) = 60 g
V(H2) = 2.24 дм3 = 2.24 L
m(Cu) : m(Al)
Cu+HCL ≠
2Al+6HCL-->2AlCL3+3H2
n(H2) = V(H2) / Vm = 2.24 / 22.4 = 0.1 mol
2n(Al) = 3n(H2)
n(Al) = 2*0.1 / 3 = 0.067 mol
M(Al) = 27 g/mol
m(Al) =n*M = 0.067 * 27 = 1.809 g
m(Cu) = m(Cu+Al) - m(Al) = 60 - 1.809 = 58.191 g
m(Al) : m(Cu) = 1.809*27 : 58.191 *64
m(Al) : m(Cu) = 48.843 : 3724.224 = 1: 76.25
ответ m(Al) : m(Cu) =1 : 76.25
Объяснение: