Posted by **Kimberky** on Monday, September 27, 2010 at 1:37pm.

"What effect does doubling (S2O8)^2- have on the rate?" I don't understand that question. Could you please explain it?

- chemistry -
**DrBob222**, Monday, September 27, 2010 at 1:43pm
You must be talking about kinetics. If the rate is r = k(S2O8^{-2}) and it is a first order equation, then doubling the concn will double the rate.

If it is a second order equation, for example,

r = k(S2O8^{-2})^{2}, then doubling concn will quadruple the rate. etc.

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