Calculate the H3O+ concentration to the correct number of significant figures for solutions with the following pH values. (e) -1.0

Video transcript

Hello everyone in this video. We want to determine the concentration of H. D. O. Plus and a solution that has a ph of negative 0.9 to five. We also want to keep in mind to use the correct amount of significant figures in our final answer. So to get a P H is equal to the negative log of the concentration of H. 30 plus. So then the concentration of H. 30 plus is equal to then are 10, raise your power of our negative P. H. And of course we're given the ph already so we're just gonna go ahead and plug that in. So it's negative the negative of 0.925. Basically those two negatives will cancel each other out to give us a positive. So once I put that into my calculator I see that my concentration of H. 30 plus is equal to 8. molars. Something to Cuba Note of is that four And tie logarithms, the number of significant figures. So to simplify that to S. F. Of the answer, you go to the number of significant figures for decimal places of the principal value. Alright, so my final answer is then 8. Molars, which is the concentration of H. 30 plus in a solution