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# In 0 order reactions does half life halve when conc. halves? Watch

1. In 0 order reactions does half life halve when concentration halves?
In 2nd order reactions does half life double when conc. halves?
2. Second order = t1/2 is not constant... it increases.
3. (Original post by ihaspotato)
Second order = t1/2 is not constant... it increases.
Yep i know that much..so there is no fixed relationship between t1/2 and concentration in 2nd order? Just that t1/2 increases as concentration decreases?
4. (Original post by chhhhelsie)
Yep i know that much..so there is no fixed relationship between t1/2 and concentration in 2nd order? Just that t1/2 increases as concentration decreases?
Yes.
5. (Original post by chhhhelsie)
Yep i know that much..so there is no fixed relationship between t1/2 and concentration in 2nd order? Just that t1/2 increases as concentration decreases?
(Original post by ihaspotato)
Yes.
That's not strictly true, there is a relationship but assuming you're A-level, you don't need to know it but just incase you're interested :

If you do maths A level, you can actually work out all of these easily by integration

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