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2 cards from this section. Quick, good the night before a test.
Define what a polyprotic acid is.
Consider the number of protons it can release.
What is an example of an amphiprotic species?
Think of substances that can act as both an acid and a base.
What is a polyprotic acid?
Focus on the number of protons involved.
Is the bicarbonate ion an example of an amphiprotic substance?
Think about its role in acid-base reactions.
Calculate the pH of a 0.1 M solution of carbonic acid (H₂CO₃), considering both dissociation constants.
Start by solving for H⁺ concentration from the first dissociation.
Given that HCO₃⁻ can act in two roles, calculate the pH of a 1.0 M solution of sodium bicarbonate.
Make sure to derive Kb using the relation with Ka.
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