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1. Starting burette value. Part G Part H Part C.Part D. 0.1 M Part E. 0.1 M Part

ID: 574771 • Letter: 1

Question

1. Starting burette value. Part G Part H Part C.Part D. 0.1 M Part E. 0.1 M Part F0.1 M NaoH 0.1 M NaOH 0.1 MHCI to HCI to buffer HCI to buffer 0.1 M NaOHto bufter to buffer water pH no.1 pH no.2 pH to water pH no.1 pH no.2 Starting value 2. Measured pH values during the six titrations. Part G. Part H Part C. Part D Part E Part F.0.1 M NaOH 0.1 M NaOH Volume 0.1 MHCI to 0.1 M HCI to 0.1 MHCI to 0.1 M NaOH to bufter added mlwater pH buffer no.1 pH bufter no.2 pH t 0.0 to buffer water pH no.1 pH no.2 pH 700 2.0 3.0 4.0 olo l.TI 11.a 5.0 6.0 7.0 8.0 9.0 1.32 1.4 IL1L.7 l1.so ll, 2.2 9 5.9 7 14 10.0 2.0C a.o 3 11.0 12.0 13.0 14.0 15.0 20 Lo 1.91 1-19 9 2 .qi S. 02 Analysis Plot the pH of the solutions as a function the volume of added HCI solution (Parts C, D, and E) or NaOH solution (Parts E, F, and G). Six plots should be constructed.

Explanation / Answer

The plot of pH of water vs volume of HCl (mL) is shown below.

The plot of pH of buffer#1 vs volume of HCl (mL) added is shown.

The plot of pH of buffer#2 vs volume of HCl (mL) added is shown in the graph below.

The variation of pH of water with volume of NaOH added (mL) is shown in the graph below.