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This is the reaction for first endpoint H3PO4(s.pdf

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This is the reaction for first endpoint: H3PO4(s) + H2O(l) ? H3O+(aq) + H2PO4–(aq) Ka1= 7.5×10-3 This is the reaction for second endpoint: H2PO4–(aq)+ H2O(l) ? H3O+(aq) + HPO42–(aq) Ka2= 6.2×10-8 This is the third, but it cannot be seen: HPO42–(aq)+ H2O(l) ? H3O+(aq) + PO43–(aq) Ka3= 2.14×10-13 Solution This is the reaction for first endpoint: H3PO4(s) + H2O(l) ? H3O+(aq) + H2PO4–(aq) Ka1= 7.5×10-3 This is the reaction for second endpoint: H2PO4–(aq)+ H2O(l) ? H3O+(aq) + HPO42–(aq) Ka2= 6.2×10-8 This is the third, but it cannot be seen: HPO42–(aq)+ H2O(l) ? H3O+(aq) + PO43–(aq) Ka3= 2.14×10-13.

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This is the reaction for first endpoint: H3PO4(s) + H2O(l) ? H3O+(aq) + H2PO4–(aq) Ka1= 7.5×10-3 This is the reaction for second endpoint: H2PO4–(aq)+ H2O(l) ? H3O+(aq) + HPO42–(aq) Ka2= 6.2×10-8 This is the third, but it cannot be seen: HPO42–(aq)+ H2O(l) ? H3O+(aq) + PO43–(aq) Ka3= 2.14×10-13 Solution This is the reaction for first endpoint: H3PO4(s) + H2O(l) ? H3O+(aq) + H2PO4–(aq) Ka1= 7.5×10-3 This is the reaction for second endpoint: H2PO4–(aq)+ H2O(l) ? H3O+(aq) + HPO42–(aq) Ka2= 6.2×10-8 This is the third, but it cannot be seen: HPO42–(aq)+ H2O(l) ? H3O+(aq) + PO43–(aq) Ka3= 2.14×10-13

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  • 1. This is the reaction for first endpoint: H3PO4(s) + H2O(l) ? H3O+(aq) + H2PO4–(aq) Ka1= 7.5×10-3 This is the reaction for second endpoint: H2PO4–(aq)+ H2O(l) ? H3O+(aq) + HPO42–(aq) Ka2= 6.2×10-8 This is the third, but it cannot be seen: HPO42–(aq)+ H2O(l) ? H3O+(aq) + PO43–(aq) Ka3= 2.14×10-13 Solution This is the reaction for first endpoint: H3PO4(s) + H2O(l) ? H3O+(aq) + H2PO4–(aq) Ka1= 7.5×10-3 This is the reaction for second endpoint: H2PO4–(aq)+ H2O(l) ? H3O+(aq) + HPO42–(aq) Ka2= 6.2×10-8 This is the third, but it cannot be seen: HPO42–(aq)+ H2O(l) ? H3O+(aq) + PO43–(aq) Ka3= 2.14×10-13