pH sig figs

[Deena Doan 2F]

Do sig figs only count after the decimal when it comes to pH?

[Annika Zhang 1F]

most of the time sig figs for pH only go to one decimal place after the whole number

[Rachel Yu 1G]

Yes, the sig fig is equal to the # of numbers after the decimal for pH.

[J Medina 2I]

Does this work the other way around too? If we were given a H3O+ concentration of 1.56 x 10^-4 where there are 3 sig figs, would we have to write the pH as 3.807 or as 3.81 ?

[Yiyang Jen Wang 4G]

Yes for PH sic figs count after the decimal

[ATingin_3I]

I thought sig figs for pH were equal to the exponent?

[Kylie Lim 4G]

During one of the review sessions they said that sig figs for pH count after the decimal so 12.22 has 2 sig figs.

[Joanne Lee 1J]

Yes, for pH sig figs, only the values after the decimal place count.

[Akshay Chellappa 1H]

Yes

[Annie Ye]

Yes, for pH you count after the decimal.

[605357751]

I believe you count two points are the decimal.

[Angelo Mapalo 4E]

You count the sig figs after the decimal point when calculating with logs.