Question

White phosphorus P4 is produced by the reaction of phosphorite rock, Ca3 (PO4)2 with coke. When exposed to air it bursts into smoke and fumes and releases a large amount of heat. Predict whether Kc for this reaction is large or small.
P4➕5O2P4O10​

Answer 1

Answer:

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Explanation:

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Answer 2

Kc ( equilibrium constant) for the reaction will be small

Explanation:

• The equilibrium constant for the reaction given will decrease since it is an  exothermic reaction .

• Since a large amount of heat is produced , the temperature of the system will increase. Therefore the equilibrium constant tends to decrease where the forward reaction is exothermic.

• This happens in accordance with Le Chatelier's Principle. The position of equilibrium tends to shift in a way in order to undo the change that has been made.