![pH = pka + log\frac{[HCO^-_3]}{[H_2CO_3]} \\\\= 6.4 + log\frac{[HCO^-_3]}{[H_2CO_3]} -------(1)](/tpl/images/0558/9307/cd1e5.png)
![pH = pka + log\frac{[HPO_4^2^-]}{[H_2PO_4^-]} \\\\= 7.2 + log\frac{[HPO_4^2^-]}{[H_2PO_4^-]}-----(2)](/tpl/images/0558/9307/8d6aa.png)
Consider a solution consisting of the following two buffer systems:
H2CO3 HCO3– + H+ pKa...
Chemistry, 23.03.2020 17:05 lindseycagle00
Consider a solution consisting of the following two buffer systems:
H2CO3 HCO3– + H+ pKa = 6.4
H2PO4– HPO42– + H+ pKa = 7.2
At pH 6.4, which one of the following is true of the relative amounts of acid and conjugate base present?
***Please explain why the right answer is right and why the other ones are wrong.
a. [H2CO3] > [HCO3- ] and [H2PO4- ] > [HPO42- ]
b. [HCO3- ] > [H2CO3] and [HPO42- ] > [H2PO4- ]
c. [H2CO3 ] > [HCO3- ] and [HPO42- ] > [H2PO4- ]
d. [H2CO3] = [HCO3-] and [HPO42-] > [H2PO4- ]
e. [H2CO3] = [HCO3-] and [H2PO4- ] > [HPO42-]
Answers: 3
Another question on Chemistry
Chemistry, 22.06.2019 03:30
If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?
Answers: 1
Chemistry, 22.06.2019 06:40
Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.
Answers: 3
Chemistry, 22.06.2019 10:00
What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18
Answers: 1
Chemistry, 22.06.2019 15:30
Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn
Answers: 1
You know the right answer?
Questions
Physics, 04.02.2021 20:10
History, 04.02.2021 20:10
Mathematics, 04.02.2021 20:10
English, 04.02.2021 20:10
History, 04.02.2021 20:10
Mathematics, 04.02.2021 20:10
Mathematics, 04.02.2021 20:10
Mathematics, 04.02.2021 20:10
Mathematics, 04.02.2021 20:10
