amandapill
29.08.2020 •
Chemistry
Determine [H3O+] of a 0.240 M solution of formic acid (Ka=1.8×10−4). Express your answer using two significant figures.
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Ответ:
2x+18+5x-9
2x+5x18-9
7x+9
7. 7
x= 1.4
hope it helps