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Author Question: Combine the reactions: P4(s) + 6 Cl2(g) 4 PCl3(g) rH298 = -1225.0 kJ/mol PCl3(g) + 3 H2O(l) ... (Read 29 times)

mpobi80

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Question 1

Coal contains an impurity that reacts with oxygen during the combustion process, producing oxides that are major environmental pollutants. This impurity is:
◦ acid rain
◦ nitrogen
◦ sulfur
◦ carbon dioxide
◦ peat

Question 2

Combine the reactions:

P4(s) + 6 Cl2(g)  → 4 PCl3(g)  Δr298 = -1225.0 kJ/mol
PCl3(g) + 3 H2O(l)  → H3PO3(aq) + 3 HCl(g)  = -853.5 kJ/mol
2 H2(g) + O2(g)  → 2 H2O(l)  = -571.5 kJ/mol
H2(g) + Cl2(g)  → 2 HCl(g)  = -184.9 kJ/mol

to obtain the reaction: P4(s) + 6 H2(g) + 6 O2(g) → 4 H3PO3(aq).
What is the value of Δr298 for this reaction?
◦ -2465.1 kJ/mol
◦ -6958.6 kJ/mol
◦ -2834.9 kJ/mol
◦ -9177.4 kJ/mol
◦ 8605.9 kJ/mol


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Marked as best answer by mpobi80 on Jul 8, 2021

amcvicar

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mpobi80

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Reply 2 on: Jul 8, 2021
YES! Correct, THANKS for helping me on my review


shewald78

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Reply 3 on: Yesterday
:D TYSM

 

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