Problem: Which of the following represents the correct relative Ka values for H3PO4 (Ka1), H2PO4- (Ka2) and HPO42- (Ka3)?A. Ka1 = Ka2 = Ka3B. Ka1 < Ka2 > Ka3C. Ka1 < Ka2 < Ka3D. Ka1 > Ka2 > Ka3E. None of the above

FREE Expert Solution

For this problem, we have to determine the relationship of each Ka values of a polyprotic acid H3PO4

  • For acid-base equilibria, Ka is the acid dissociation constant which will tell us how strong an acid is
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Problem Details

Which of the following represents the correct relative Ka values for H3PO4 (Ka1), H2PO4- (Ka2) and HPO42- (Ka3)?

A. Ka1 = Ka2 = Ka3

B. Ka1 < Ka2 > Ka3

C. Ka1 < Ka2 < Ka3

D. Ka1 > Ka2 > Ka3

E. None of the above

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