Question

Determine the minimum mass of hydrogen gas required to produce 226 kj of heat.

Answer 1

By definition, the minimum mass of hydrogen gas required to produce 226 kJ of heat is 1.8697 grams.

The reaction is as follows:

2 H₂(g) + O₂(g) → 2 H₂O(g)     ΔH = - 483.5 kJ

In this reaction, you can see that 2 moles of H₂ produces 483.5 kJ of heat. But you want to release 226 kJ of heat.

So you can apply the following rule of three: if 483.5 kJ is released by 2 moles of H₂, 226 kJ of heat is released by when moles of H₂?

$amount of moles of H_{2} =\frac{226 kJx2 moles }{483.5 kJ}$

amount of moles of H₂= 0.93485 moles

Molar mass is the amount of mass that a substance contains in one mole. In this case, the molar mass of H₂ is 2 $\frac{g}{mole}$.

So, the mass containing 0.93485 moles is calculated as:

0.93485 moles× 2 $\frac{g}{mole}$= 1.8697 grams

Finally, the minimum mass of hydrogen gas required to produce 226 kJ of heat is 1.8697 grams.

Learn more:

• brainly.com/question/9846800?referrer=searchResults
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