# A #5 L# container holds #4 # mol and #4 # mol of gasses A and B, respectively. Groups of four of molecules of gas B bind to three molecule of gas A and the reaction changes the temperature from #280^oK# to #320^oK#. By how much does the pressure change?

##### 1 Answer

Apr 18, 2018

A decrease of

#### Explanation:

We know that

#P# is pressure#V# is volume#n# is number of moles#R# is the gas constant, and equal to#8.31\ "J"/("mol"\ "K")# #T# is temperature

Rearrange the formula to get

Initially, the pressure

With the reaction, every

(You can see more clearly if you write as an equation

The temperature rises to

Thus, the new pressure is

Thus, there is a decrease in pressure of