## 8.93

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

Janine Chan 2K
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Joined: Fri Sep 29, 2017 7:04 am

### 8.93

When writing the chemical equation, how do you know water is in the liquid state?

Johann Park 2B
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### Re: 8.93

The problem states that this is a combustion reaction at 25°C. The two products that come from combustion are CO2(g) and H2O - the H2O is liquid water because the combustion happens at room temperature.

Charles Ang 1E
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Joined: Thu Jul 13, 2017 3:00 am

### Re: 8.93

The reaction takes place at room temperature, and water at room temperature is liquid.

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### Re: 8.93

when its a combustion reaction, I generally assume the water is in a liquid state.

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