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AP EAMCET Engineering 26 Apr 2017 Shift 1 Paper

Section: Chemistry

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Question : 129 of 160

Marks: +1, -0

i) H3PO4(aq)⇌H+(aq)+H2PO4−(aq)
ii) H2PO4−(aq)⇌H+(aq)+HPO42−(aq)
iii) HPO42−(aq)⇌H+(aq)+PO43−(aq)
The equilibrium constants for the above reactions at a certain temperature are K1,K2‌and‌K3 respectively. The equilibrium constant for the reaction H3PO4(aq)⇌3H+(aq)+PO43− in terms of K1,K2‌and‌K3 IS

K1+K2+K3
K1
K2+K3
K3
K1K2
K1K2K3

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