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Question 20 Given the following reaction: 4C,HCl2 + 1302 +800, + 10H,0 + 4Cl2 AH = -2190 kJ What is the heat change in kJ if
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Answer #1

Answer

moles of Cl2 = mass/molar mass = 62.2/70.9 = 0.877 moles

given delta H= -2190 kJ

As per the reaction

energy change when 4 mole Cl2 produced is= 2190 kJ

so energy change when 0.877 mole of Cl2 produced = (2190/4)*0.877= 480.3 kJ

the answer is option C 480.20 kJ

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