PbS is heated in air to form lead ii oxide 2PbS(s) + 3O2(g) = 2PbS(s) + 2SO2(g) H = -827.2 kJ. What mass of PbO is produced if 0.49 MJ of heat are emitted?

Luka2015 Luka2015    2   05.01.2022 21:12    0

Ответы
Dasulya21 Dasulya21  05.01.2022 22:00

2.24

Объяснение:

m(PBS)=23.9 g

V(SO2)-?

2PBS+3O2=2PbO+2SO2

n(PBS)=m/M=23.9 g/239 g/mol=0.1 mol

n(PbS)=n(SO2)=0.1 mol

V(SO2)=Vm*n=22.4 l/mol*0.1 mol=2.24 l

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