2so3(g)⟶2s(s)+3o2(g)δh=+790kj. how many kilojoules are required when 2.1 moles of so3 reacts?

829.5 kilo Joule heat will be required when 2.1 moles of sulfur trioxide reacts.

Solution:

Given reaction:

On dividing the chemical equation by 2 we get :

If 1 mole of sulfur trioxide requires 395 kJ then 2.1 moles will require:

829.5 kiloJoule heat will be required when 2.1 moles of sulfur trioxide reacts.

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