Calculate the pH from each H3O" concentration.

Part 1 of 2

H30 *= 9.20x10-2
M. Be sure your answer has the correct number of significant figures.

pH =

10

X

5

Part 2 of 2

H30+ = 0.040 M. Be sure your answer has the correct number of significant figures.

nH=

Part 1:

pH = -log(9.20x10^-2) = 1.04

Part 2:

pH = -log(0.040) = 1.40