## chemical equilibrium

Science questions not covered in Chem 14A and 14B. Try to limit questions to chemistry (inorganic chemistry, physical chemistry, organic chemistry, biophysical chemistry, biochemistry, materials science, environmental chemistry).

Luke_Lucido_3B
Posts: 15
Joined: Wed Sep 21, 2016 2:58 pm

### chemical equilibrium

How does heat and pressure affect chemical equilibrium? i.e. shifting toward products/reactants?

Mikaela Gareeb 3G
Posts: 31
Joined: Wed Sep 21, 2016 3:00 pm

### Re: chemical equilibrium

If the reaction is endothermic (requires heat), then heating the equation will favor products (forward reaction) whereas if the reaction is exothermic (releases heat), then heating will favor reactants (reverse reaction). Also, since pressure and volume are inversely proportional (as pressure increases, volume decreases- and vice versa) if volume decreases and there are more moles of gas on the left, then the reaction shifts to the right. If volume decreases and there are more moles of gas on the right, then the reaction shifts to the left. NOTE: if the pressure is increased by adding inert gas (noble gas), then the moles of R, P, and V are constant.