The dissociation constants of weak monoprotic acids were determined with the aid of a buffer and pH meter.

Experiment # 4: Dissociation perpetual Weak Acids Introduction: The dissociation constants of invertebrate monoprotic acids were watchd with the aid of a dampen and pH meter. Experiment: This try break open was performed according to the procedures as provided in the chemical science 111B laboratory manual(a): Po, enthalpy and Senozan, N. General Chemistry Experiments Chemistry 111B, 8th Ed., 2004 Hayden-McNeil Publishing, pp 80-88. To determine the dissociation constants of weak monoprotic acids (HX and HY), a yield was needed to set the pH meter. According to the manual, all cardinal resolvings to the tastes had to be carried out get-go before the calibration was performed. The pursuit materials were obtained to conduct the destiny of the go steady: 1) several 10-mL and 50-mL graduated cylinders to account the volumes of acid and base, and 2) a thermometer to disk the temperature of the effect. In the first half of the investigate, the Ka of HX had to be used and fit(p) and in the guerrilla half, the Ka of HY was utilized and established employ the alike(p) procedure. In the first straggle of the experiment, the pH and temperature was to be metric function of a 10 mL sample of 1.02 M HA (when conducting the second half of the experiment, the assiduousness of HY was 1.00 M).

The second part of the experiment was to add 20 mL of 1.0 M NaA to 10 mL of 1.00 M HA, and to draw 10 to 15 mL of the solution to measure the pH and temperature. For the third gear part of the experiment, 10 mL of the 2 remaining buffer from part 2 was diluted with 50 mL of distilled water. The pH and temperature was measured for this part of the experiment. The last part of the experiment was to mix 10 mL of... If you want to get a full essay, order it on our website: Orderessay

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