3 years ago

In this thermochemical reaction, what does the coefficient ½ represent?

1 answer:

3 0

A thermochemical reaction is a chemical reaction with an additional information of the heat of reaction. For example, this is the thermochemical reaction for the combustion of hydrogen gas:

H₂ (g) + 1/2 O₂ (g) → H₂O (l) ΔH = -285.8 kJ

The coefficient 1/2 represents the number of moles of O₂ needed to combust 1 mole of H₂ gas in order to yield one mole of water.

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295.7 mL of 24% trichloroacetic acid (tca) is needed .

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Let the volume of 24% trichloroacetic acid solution be x

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