Sig Figs for calculating pOH and pH

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Natalie Yakobian
Posts: 45
Joined: Fri Sep 25, 2015 3:00 am

Sig Figs for calculating pOH and pH

Postby Natalie Yakobian » Thu Nov 26, 2015 5:13 pm

Hi,
I was wondering when calculating pOH and pH do we consider sig figs?

It seems from the book questions that they don't.

Thanks so much!

Shreya Banerjee 2F
Posts: 24
Joined: Fri Sep 25, 2015 3:00 am

Re: Sig Figs for calculating pOH and pH

Postby Shreya Banerjee 2F » Thu Nov 26, 2015 6:43 pm

You do consider sig figs in calculations, but there are some different rules when you have calculations that include logarithms and exponents. The number of sig figs in your answer will be the number of decimal places in your exponent or logarithm. For example, if you have 10-4.364, your answer should have 3 sig figs (because the exponent has 3 decimal places).


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