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Calculate the pH if a solution made by mixing 350. mL of 0.250 M HNO3 is mixed with 250. mL of 0.450 M KOH.?

2007-05-02 11:20:14 · 1 answers · asked by Geddy_V 2 in Science & Mathematics ➔ Chemistry

1 answers

mols of HNO3 = 87.5 millimol.

mols of KOH = 112.5 millimol

Moles of KOH left over = 25 millimol

Vol = 800 ml

Molarity of OH- = 0.03125

Thus pH = 14+log(0.03125) = 12.49

2007-05-02 20:54:38 · answer #1 · answered by ag_iitkgp 7 · 1⤊ 0⤋

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