Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2 CO(g) + O2(g) → 2 CO2(g)∆H for this reaction is −135.28 kcal. How much heat would be released if 12.0 moles of carbon monoxide reacted with sufficient oxygen to produce carbon dioxide? Use only the information provided in this question. 1. 270.56 kcal 2. 1623.36 kcal 3. 811.68 kcal 4. 405.84 kcal 5. 541.12 kcal 6. 135.28 kcal

Respuesta :

Answer : The amount of heat released would be, (3) 811.68 kcal

Explanation :  Given,

Moles of carbon monoxide = 12.0 mole

Enthalpy change = -135.28 kcal

The given balanced chemical reaction is,

[tex]2CO(g)+O_2(g)\rightarrow 2CO_2(g)[/tex]

From the balanced chemical reaction we conclude that,

As, 2 moles of carbon monoxide react to release heat = 135.28 kcal

So, 12.0 moles of carbon monoxide react to release heat = [tex]\frac{12.0}{2}\times 135.28kcal=811.68kcal[/tex]

Thus, the amount of heat released would be, 811.68 kcal

The amount of heat released when 12 moles of CO reacted with sufficient amount of oxygen is 811.68 Kcal

The following data were obtained from the question:

2CO(g) + O₂(g) → 2CO₂(g) ∆H = −135.28 kcal

From the balanced equation above,

2 moles of CO reacted to release 135.28 Kcal

  • With the above information, we can obtain the amount of heat released when 12 moles of CO react. This is illustrated below:

From the balanced equation above,

2 moles of CO reacted to release 135.28 Kcal.

Therefore,

12 moles of CO will react to release = (12 × 135.28)/2 = 811.68 Kcal

Thus, 12 moles of CO will react to release 811.68 Kcal

The correct answer to the question is Option (3) 811.68 kcal

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