Question #192947

Calculate the heat of hydrogenation of ethane 𝐶2𝐻4 using the following reactions:

2𝐶 (𝑔𝑟𝑎𝑝ℎ𝑖𝑡𝑒) + 3𝐻2 (𝑔) → 𝐶2𝐻6 (𝑔) ∆𝐻𝑓 = −84.5 𝑘𝐽/𝑚𝑜𝑙

2𝐶(𝑔𝑟𝑎𝑝ℎ𝑖𝑡𝑒) + 2𝐻2 (𝑔) → 𝐶2𝐻4 (𝑔) ∆𝐻𝑓 = 52.3 𝑘𝐽/mol

Expert's answer

Reaction of heat of hydrogenation of ethane:

Given that:

Equation .1.

Equation .2.

Now to form the main equation we have to subtract equation 2 from equation 1:

So heat of hydrogenation

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Assignment Expert21.06.21, 13:53Dear

Stephany,You're welcome. We are glad to be helpful.

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Stephany21.06.21, 12:12Thank you for the answer it helps of me

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