Solve the following problem.

1. The concenration of H+ ions in a bottle of table wine was 3.2 x 10^-4 M right after the cork was removed. Only half of the wine was consumed. The other half, after it had been standing open to the air for a month, was found to have a H+ ion concentration equal to 1.0 x 10^-3 M. Calculate the pH of the wine on each of these occasions.

2. The pH of rainwater collected in ANHS on particular day was 4.82. Calculate the H+ ion concentration of the rainwater.

3. Find the pH if the [OH-] is equal to 1.0 x 10^-6 M.

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