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To a 100.0 mL volumetric flask were added 7.00 mL of 1.70 M of H3VO4, 1.401...

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Chemistry

To a 100.0 mL volumetric flask were added 7.00 mL of 1.70 M ofH3VO4, 1.401 g of NaH2VO4, and 15.00 mL of 1.5 M NaOH. The flaskwas filled to the calibration mark with water. What were the molarconcentrations of H+, OH-, the two other relevant molecules and thepH of the solution? Is the resulting solution a buffer? Ka1 = 1.0 x10-4, Ka2 = 2.8 x 10-9 and Ka3 = 5.0 x 10-15 for H3VO4.

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4.1 Ratings (636 Votes)
moles of H3VO4 in the solution MxV 170 molL x 0007 L 00119 mol Moles ofNaH2VO4 in the solution mass molar mass 1401 g 13995 gmol 00100 mol Moles of NaOH added MxV 15 molL    See Answer
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