Problem- We need 1.00L of a propionic acid/propionate (Ka= 1.30x10-5) buffer with a starting pH of 4.850. It must be able to resist the addition of 12.00mL of 0.500M NaOH while remaining below pH 5.250. How many mL of 1.25M stock acid and 0.500M NaOH base solution must be used in preparation of this buffer?
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