Rearrange formulas to highlight a chosen quantity across the expression types studied.
Rearrange a logarithmic formula to isolate a chosen quantity
Problem
Rearrange \(\text{pH}~=~-\log(H)\) to isolate \(H\).
Big Picture
What this problem is really about
Isolate the logarithm first, keeping careful track of the negative sign outside it. Then use the inverse relationship between a common logarithm and a power of ten, so the isolated logarithm's output becomes the exponent. The resulting exponential quantity is automatically positive, which matches the original logarithm's input requirement.
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