200 mL water sample has an initial pH of 9.0, it is titrated with 0.02 N H2SO4 to measure its alkalinity. Following data was obtained: 2.0 mL of H2S04 is consumed to reach pH 8.3; additionally 20.9 mL of H2SO4 is used to reach pH 4.3 Based on the experimental data, determine what are the alkaline species present in the water sample, and estimate their concentration in mol/L.

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200 mL water sample has an initial pH of 9.0,
it is titrated with 0.02 N H2SO4 to measure its
alkalinity. Following data was obtained:
2.0 mL of H2S04 is consumed to reach pH 8.3;
additionally 20.9 mL of H2S04 is used to
reach pH 4.3
Based on the experimental data, determine
what are the alkaline species present in the
water sample, and estimate their
concentration in mol/L.
Transcribed Image Text:200 mL water sample has an initial pH of 9.0, it is titrated with 0.02 N H2SO4 to measure its alkalinity. Following data was obtained: 2.0 mL of H2S04 is consumed to reach pH 8.3; additionally 20.9 mL of H2S04 is used to reach pH 4.3 Based on the experimental data, determine what are the alkaline species present in the water sample, and estimate their concentration in mol/L.
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