4.3.4 - effect of temperature Flashcards
1
Q
increasing temperature increases rate because:
A
- the particles have more kinetic energy
- so the percentage of collisions with enough energy is higher
- so there are more successful collisions per unit time
2
Q
how can increasing temp be accomplished?
A
heating
3
Q
how can the effect of temp on rate be demonstrated?
A
by reacting magnesium with hydrochloric acid
4
Q
variables of the magnesium and acid experiment?
A
independent - temp of HCl
dependent - time take for Mg to disappear
control -
mass + surface area of Mg
volume + concentration of HCl
5
Q
how is rate calculated
A
rate(s^-1) = 1/time taken
