1)
дано
V(H2) = 2.24 L
---------------------
m(NH3)-?
N2+3H2-->2NH3
n(H2) = V(H2) / Vm = 2.24 / 22.4 = 0.1 mol
3n(N2) = 2n(NH3)
n(NH3)= 0.1 * 2 / 3 = 0.07 mol
M(NH3) = 17 g/mol
m(NH3) = n*M = 0.07 * 17 = 1.19 g
ответ 1.19 г
2) дано
m(S) = 20 g
-----------------
V(SO2) - ?
S+O2-->SO2
M(S) = 32 g/mol
n(S) = m/M = 20 / 32 = 0.625 mol
n(S) = n(SO2) = 0.625 mol
V(SO2) = Vm * n = 22.4 * 0.625 = 14 L
ответ 14 л
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Answers & Comments
1)
дано
V(H2) = 2.24 L
---------------------
m(NH3)-?
N2+3H2-->2NH3
n(H2) = V(H2) / Vm = 2.24 / 22.4 = 0.1 mol
3n(N2) = 2n(NH3)
n(NH3)= 0.1 * 2 / 3 = 0.07 mol
M(NH3) = 17 g/mol
m(NH3) = n*M = 0.07 * 17 = 1.19 g
ответ 1.19 г
2) дано
m(S) = 20 g
-----------------
V(SO2) - ?
S+O2-->SO2
M(S) = 32 g/mol
n(S) = m/M = 20 / 32 = 0.625 mol
n(S) = n(SO2) = 0.625 mol
V(SO2) = Vm * n = 22.4 * 0.625 = 14 L
ответ 14 л