andersonemma2222
02.06.2021 •
Chemistry
A buffer is made by preparing a 1.00 L solution that contains 0.15 mol in formic acid (HCOOH) and 0.20 mol in sodium formate (HCOONa). The Ka of formic acid is 1.8x10-4 . (a) Determine the pH of the buffer (b) What is the pH of the buffer after the addition of 0.05 mol of NaOH
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Ответ:
9.0 moles Ca(NO₃)₂
Explanation:
from definition of Molarity = moles of solute / volume of solution in liters
=> moles = Molarity x Volume(L) = 6.00 molar x 1.5 liters = 9.0 moles Ca(NO₃)₂