Calculate the pH of 0.150 M solution of NaÂÂ₂HPO₄ .

Know that it can act as both an acid or a base.

Am told to pick the largest Ka.

Calculated pH is 10.19.

How do I solve and get the pH of 10.19?

Also, cant use 1/2 [pkw +pka +log c ]

Acid

K_a

H₃PO₄

7.1 x 10^-3

H₂PO₄^-

6.3 x 10^-8

HPO₄^2-

4.5 x 10^-13

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Tod ThielLv2

13 Dec 2019

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Related questions

1.) Calculate the pH of a 0.150 M solution of Na₂HPO₄. Report just the numerical answer with two digits past the decimal point. Do not include pH = or anything other than the number.

Acid	K_a
H₃PO₄	7.1 x 10^-3
H₂PO₄^-	6.3 x 10^-8
HPO₄^2-	4.5 x 10^-13

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Acid	K_a
HNOÂ₃	>>1
NH₄⁺	5.6 x 10^-10

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