Two 21.0 mL samples, one 0.100 M HCl and the other 0.100 M HF, were titrated with 0.200 M KOH.

What is the volume of added base at the equivalence point for HCl?

What is the volume of added base at the equivalence point for HF?

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Collen VonLv2

8 Nov 2019

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21.0 mL of 0.128 M diprotic acid (H2A) was titrated with 0.1017 M KOH. The acid ionization constants for the acid are Ka1=5.2Ã10â5 and Ka2=3.4Ã10â10. At what added volume of base does the first equivalence point occur? At what added volume of base does the second equivalence point occur?

Two 25.0 mL samples, one 0.200 MKOH and the other 0.200 M CH3NH2, were titrated with 0.100 MHI. Answer each of the following questions regarding these two titrations.

A.) What is the volume of added acid at the equivalence point for KOH?

B.) What is the volume of added acid at the equivalence point for CH3NH2?

C.) Predict whether the pH at the equivalence point for each titration will be acidic, basic, or neutral.

neutral for KOH and basic for CH3NH2

neutral for KOH and acidic for CH3NH2

basic for KOH and neutral for CH3NH2

acidic for KOH and neutral for CH3NH2

neutral for both

D.)

Predict which titration curve will have the lowest initial pH.

The initial pH will be lower for KOH.

The initial pH will be lower for CH3NH2.