Question 24 Not yet answered Marked out of 1.00 Remove flag Question text Use the following information to answer the next question. Galena, PbS(s),...

Question 24

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Use the following information to answer the next question.

Galena, PbS(s), is an important ore from which lead is obtained. One of the chemical reactions that occurs during the industrial refinement of galena into lead is the following:

2PbS(s)+3O2(g)→2PbO(s)+2SO2(g)   ΔrHo=−827.4kJ

The molar enthalpy of formation of galena is

Select one:

+ 204.2 kJ/mol

+ 102.1 kJ/mol

- 102.1 kJ/mol

- 204.2 kJ/mol