Help please!

If the ph of vinegar is 2.9, what is the pOH and [H+1]?

Thank you!

Explanation In order to calculate the pH, take the negative log of the hydronium ion concentration. To find the pOH, simply subtract the pH from 14. In order to calculate the pOH, take the negative log of the hydroxide ion concentration. To find the pH, simply subtract pOH from 14.

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