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Sharaawy
@Sharaawy
July 2022
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1.Восстановите правую часть уравнений реакции:
a)H2 + S = ...
б)H2 + Li = ...
в)HI + K = ...
г) MnO2 + H2 = ...
д) H2SO4(расть) +Zn = ...
е) Zn+ HCl= ...
ж)WO3 + H2 =
2.Какой объем занимают.
а) 100г водорода;
б) 12,04 x 10^23 молекул водорода?
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lyubavasil
б)H2 + 2Li = 2LiH..
в) 2HI + 2K = .2KJ+H2..
г) MnO2 + 2H2 = Mn+2H2O
д) H2SO4(расть) +Zn = ZnSO4+H2
е) Zn+ 2HCl= ZnCl2+H2.
ж)WO3 + 3H
2=W+3H2O
2) а)n=m/M(Mr) M=Mr Mr(H2)=2 M=2г/моль n(H2)=100/2=50(моль)
V=n*Vm V(H2)=50*22,4=1120(л)
б) n=N/NA n(H2)=12 ,04*1023/6,02*1023=2(моль)
V(H2)=2*22,4=44,8(л)
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Answers & Comments
в) 2HI + 2K = .2KJ+H2..
г) MnO2 + 2H2 = Mn+2H2O
д) H2SO4(расть) +Zn = ZnSO4+H2
е) Zn+ 2HCl= ZnCl2+H2.
ж)WO3 + 3H2=W+3H2O
2) а)n=m/M(Mr) M=Mr Mr(H2)=2 M=2г/моль n(H2)=100/2=50(моль)
V=n*Vm V(H2)=50*22,4=1120(л)
б) n=N/NA n(H2)=12 ,04*1023/6,02*1023=2(моль)
V(H2)=2*22,4=44,8(л)