## 4.7

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

Samantha Hoegl Roy 2C
Posts: 81
Joined: Fri Sep 28, 2018 12:15 am

### 4.7

how do we know that for the combustion of C6H6(l), H2O will be created in liquid form? Is this always the case?

Elisa Bass 4L
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

### Re: 4.7

In this case, I think because the reaction occurs at 25°C, H2O is a liquid because it condenses after it is formed.

Samantha Hoegl Roy 2C
Posts: 81
Joined: Fri Sep 28, 2018 12:15 am

### Re: 4.7

So can I always assume that if the combustion happens at below 100° Celsius that water will be liquid? And if it is above 100° that water vapor will be released instead?