Compare your values with other groups to make sure you have the same general val

Question

Compare your values with other groups to make sure you have the same general values. Meaning they are appropriately acidic/basic/neutral.

Questions (use results from your data table where appropriate):

1. Compare the three pH determination methods in terms of speed, precision, and accuracy.

Indicator:

pH Paper:

pH Meter:

2. Using your overall data results:

a. List the salts experimentally determined to be acidic.

b. List the salts that are theoretically acidic.

Data Table 1. Fill in the following chart using the collected data from your section. (We will consider neutral to be 6.5-7.5) Acidic/ asic/Neutral pl with nH with Conclusionp wp pH wi nH with methyl red bromothy mo blue pH from paper pll indicators ap water Boiled water aPO 212.3 Bo kCI 8.7? 11.6 Na CO 0.I MHC O.I M NaOH r values with other groups to make sure you have the same general values. Meaning they are appropriately acidic/basic/neutrai Na

Explanation / Answer

Based on speed,precision and accurancy order is

PH Meter > Indicator > PH paper.

PH meter is gerally gives best results as compare to other two as electode used in PH meter is very sensitive and accurate. One should take care that PH meter should be always standerdized before use.

Indicators are generally used for determining end point of reaction it is not as precise as color change during end point remains same if you added more reagent in solution.

PH papers are only used for getting rough idea about the PH it is least precise and least accurate.

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