Page 323 - Chemistry eBook
P. 323
Pressure as a Stress
• Pressure only affects gases.
• If the pressure increases, the reaction will shift to the
side with smaller volume/fewer moles. (To find the
number of moles, add the coefficients.)
• If the pressure decreases, the reaction will shift to the
side with larger volume/more moles.
CH4 + H2O ⇄ 3H2 + CO 2 moles 4 moles
• If the pressure increases, the reaction shifts to the left side (fewer molecules).
• If the pressure decreases, the reaction shifts to the right side (more molecules).
When the students are under high pressure, the teacher gives a smaller volume of work. (When pressure increases, the reaction shifts to the side with smaller volume.) When there’s not too much pressure, the teacher will give a larger volume of work. (When pressure decreases, the reaction shifts to the side with larger volume.)
UNIT 8: KINETICS AND EQUILIBRIUM © 322
