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A

Anonymous

Dec 29, 2024

A solution with [ OH-] of 5 x 10-3 has a pH of ________.?

A solution with a hydroxide ion concentration ([OH^-]) of (5 \times 10^{-3}) M has a pH of __. What is the correct calculation to determine the pH from this hydroxide ion concentration?

1 Answers

A
Anonymous

Dec 01, 2024

Step 1: Find the pOH.

pOH = -log[OH-]

pOH = -log(5 x 10^-3)

By the way the “^” symbol here means “to the power of”.

Put that into your scientific calculator and you should get something like:

pOH = 2.301029996

Step 2: Now that you have your pOH, subtract that from 14 to get your pH.

pH = 14 – pOH

pH = 14 – 2.301029996

pH = 11.69897

There you go.

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