Asked by Anthony
A student dilutes a solution so that its pH changes from 2.4 to 4.4.
10mL of the original solution was diluted by how many mL?
10mL of the original solution was diluted by how many mL?
Answers
Answered by
DrBob222
pH = -log(H^+).
pH 2.4; (H^+) = 3.98E-3
pH 4.4 = 3.98E-5
So it has been diluted by 100 times.
3.98E-3 x (10 mL/x mL) = 3.98E-5
Solve for X. You should have gone to 1000 mL. By the way, you should use the same screen name. We can help you better if you do.
pH 2.4; (H^+) = 3.98E-3
pH 4.4 = 3.98E-5
So it has been diluted by 100 times.
3.98E-3 x (10 mL/x mL) = 3.98E-5
Solve for X. You should have gone to 1000 mL. By the way, you should use the same screen name. We can help you better if you do.
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