If slope for ln(A) vs. t is negative is k?


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Nicole Leppi 2K
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Joined: Fri Sep 26, 2014 2:02 pm

If slope for ln(A) vs. t is negative is k?

Postby Nicole Leppi 2K » Tue Feb 24, 2015 9:24 pm

For example if a slope for a first order reaction (ln(A)) vs. t) was -3 would k=-3 or would k=3?

Neil DSilva 1L
Posts: 70
Joined: Fri Sep 26, 2014 2:02 pm

Re: If slope for ln(A) vs. t is negative is k?

Postby Neil DSilva 1L » Tue Feb 24, 2015 9:27 pm

The negative sign is added so that the slope can be negative while k remains positive, so if the slope was -3:

and k is just 3 (still positive).

Just remember, the proportionality constant, k, is always positive.


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