In a gaseous system

[monokekie]

In a gaseous system, the chances of two reactant molecules colliding is increased by:
A increasing the temperature.
B decreasing the pressure
C removing one reactant
D increasing the volume

dilemma occurs as i decide between options A and D....

any idea ? xD

[Toothpaste]

A

Increasing the temperature = supplying energy to the molecules = zoooooooooooooooooooooooooooooom (moves fast, more frequent collisions)

Increasing the volume is making the SPACE BIGGER = less chance = same as B, the pressure decreases as you increase volume
(by "increasing the volume" they did not mean "increase the amount of reactants" otherwise they would have written that, if that's what got you there.)

[monokekie]

ooooooops, now i see why..... i have misread volume as pressure =_=;
silly me >.<

thanks for your time Toothpaste! haha