The s the name of the solution that is slowly added to the during a titration. A

Question

The s the name of the solution that is slowly added to the during a titration. At the first equivalence point in this experiment the number of moles of HC1 added to the sample and the number of moles of PO_4^3 originally in the sample are At the equivalence point PO_4^3 remains and there is H_3O^+ left over. The number of moles of H_3O* added to the sample is to the number of moles of PO_4^3- with which you started. After the first equivalence point, further addition of HCl will cause the reaction to form what ion? The titrant in this experiment, HCl. is a(n) The sample in this experiment, phosphate, is a(n) The titrant will be poured into which piece of equipment? The sample will be poured into which piece of equipment? Before reaching the first endpoint, the color of the sample solution will be At the first endpoint the color of the solution will be Before reaching the second endpoint (but after the first one), the color of the sample solution will be At the second endpoint the color of the solution will be After you reach the first endpoint, what must you do with the sample solution? Explain.

Explanation / Answer

1) the titrant is the name of the solution that is slowly added to the sample during a titration.

2) at the equivalence point in this experiment the number of moles of HCl added to the sampleand the number of moles of PO43- originally in the sample are equals.

3) at the equivalence point there is no more phosphate remains and there is no H3O+ left over. the number of moles of H3O+ added to the sample is equal to the number of moles fo PO43- with which you started.

4)HPO42-

5) The titrant in this experiment, HCl, is an acid.

6) The sample in this experiment, phosphate, is a base.

7) Buret.

8) Erlenmeyer flask.

The colors in questions nine and ten depend on the indicators used in the experiment.

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