Related Rate Problem HeLp!

1. Jun 29, 2008

BuBbLeS01

Related Rate Problem....HeLp!

1. The problem statement, all variables and given/known data
The ph of a solution is 3, ph changes at a rate of 0.01 at time t and the concentration of H3O is 10^-ph. At what rate is concentration decreasing at time t.

2. Relevant equations

3. The attempt at a solution
I need someone to walk me through this if possible..I've never done a related rate question (or if I did I don't remember).

2. Jun 29, 2008

nrqed

Re: Related Rate Problem....HeLp!

First things first.

Let's say you have a function y(x) and x itself is a function of time x(t). So we have y(x(t)).

If you are given dx/dt, can you write down the expression for dy/dt in terms of dx/dt? (it's basically the chain rule). If you know this, the rest will be straightforward.

Last edited: Jun 29, 2008