(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

[tex]50ml[/tex] of [tex]0.10M Na_3PO_4 + 50ml[/tex] of [tex]0.10M NaH_2PO_4[/tex]

For [tex]H_2CO_3[/tex]:

[tex]Ka_1 = 7.5 * 10^{ - 3}[/tex]

[tex]Ka_2 = 6.2 * 10^{ - 8}[/tex]

[tex]Ka_3 = 1.0 * 10^{ - 12}[/tex]

2. Relevant equations

3. The attempt at a solution

Since [tex]K_h[/tex] of [tex]Na_3PO_4 > > Ka_2[/tex] , I considered only hydrolysis of [tex]Na_3PO_4[/tex] but it gives wrong answer.

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# Homework Help: Another pH

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