## Kc sig figs

Jessica Li 4F
Posts: 115
Joined: Fri Aug 09, 2019 12:16 am

### Kc sig figs

When determining how many sig figs to include in our end values, do we factor in the sig figs of given K values too? For instance, if you want to find the concentration of H2 and have the concentrations of I2 and HI up to 3 sig figs, but your given K value only has 2, would you round the value of [H2] to 2 or 3 sig figs?

Thank you!

Maia_Jackson_2C
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

### Re: Kc sig figs

I'm not entirely sure but I think for sig figs you just use the least given amount, and it doesn't really matter where it comes from unless otherwise stated.

Bryan Chen 1H
Posts: 58
Joined: Mon Jun 17, 2019 7:24 am

### Re: Kc sig figs

i think it would be 2 unless otherwise specified but im not too sure

Wilson 2E
Posts: 100
Joined: Sat Aug 17, 2019 12:18 am

### Re: Kc sig figs

For log sig figs, you take the number of sig figs from the number you log and have that many sig figs after the decimal point of your answer (e.g. log(3.800) = 0.5798).

Michelle Xie 2B
Posts: 99
Joined: Sat Aug 17, 2019 12:18 am

### Re: Kc sig figs

Take the least amount of sig figs.