Question 11-4 Titrations in Diproti 2. Consider a hypothetical diprotic acid (H2A) with pK = 7.301 and pk = 10.00. A 40.0-ml. sample of a 0.050 O M solution of the disodium salt of this acid (Na A) is titrated with 0.100 M HCI. a) Calculate the pH at 10.00-ml intervals of titrant added from 0 to 50 ml b) Sketch the titration curve. c) What would be an ideal p for an indicator to use in this titration?

G1AHZT The Asker · Chemistry

Transcribed Image Text: 11-4 Titrations in Diproti 2. Consider a hypothetical diprotic acid (H2A) with pK = 7.301 and pk = 10.00. A 40.0-ml. sample of a 0.050 O M solution of the disodium salt of this acid (Na A) is titrated with 0.100 M HCI. a) Calculate the pH at 10.00-ml intervals of titrant added from 0 to 50 ml b) Sketch the titration curve. c) What would be an ideal p for an indicator to use in this titration?

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WWUV9K

a) pH at 10.00 mL intervals between 0 to 50 mL. The  results are in th table ob b),are in red bold.   b) Titration curve. The data are: [HCl] 0,1 H2A [NaHA] [Na2A] Vol. HCl pH     0 0 0,05 0 11,349485     0 0,011111111 0,033333333 0,005 10,4771213     0 0,02 0,02 0,01 10     0 0,027272727 0,009090909 0,015 9,52287875     0 0,028571429 0,007142857 0,016 9,39794001     0 0,029824561 0,005263158 0,017 9,24667233     0 0,031034483 0,003448276 0,018 9,04575749     0 0,03220339 0,001694915 0,019 8,7212464     0 0,032318105 0,001522843 0,0191 8,67320914     0 0,032329555 0,001505667 0,01911 8,66812932     0 0,0323307 0,00150395 0,019111 8,66761835     0 0,0323307 0,00150395 0,019111 8,66761835     0 0,032330814 0,001503778 0,0191111 8,66756722     0 0,033333333 0 0,02 8,6505     0,00163934 0,031147541 0 0,021 8,5797536     0,00322581 0,029032258 0 0,022 8,25524251     0,00164096 0,031145391 0 0,021001 8,57929667     0,00165547 0,031126045 0 0,02101 8,57520359     0,00180033 0,030932897 0 0,0211 8,53606912     0,00322581 0,029032258 0 0,022 8,25524251     0,00476 ... See the full answer