Which gives a better measure of the pH: universal PH Paper or a pH meter? Can di

Question

Which gives a better measure of the pH: universal PH Paper or a pH meter? Can distilled water be an effective buffer? Use data from your experiment to support your answer. Which of your buffer systems (a, b, c, or d) was the most effective in resisting a change in pH? How does your data support this conclusion? You have a buffer system made up of equimolar amounts of carbonic acid, H_2CO_3, and sodium bicarbonate, NaHCO_3. Write equations to show how this buffer behaves when HCl is added and NaOH is added. Calculate the expected pH values of the buffer systems from the experiments (a, b, c, d), using the Henderson-Hasselbalch equation shown in the Background section. Use for pK_a values: carbonic acid = 6.37 and acetic acid = 4.75. Are these calculated values in agreement with your measured pH values?

Explanation / Answer

pH meter because if it is correctly calibrated pH meter would more exactly measure the H+ ion concentration than a universal pH paper which would measure approximate H+ ion concentration in solutions.

So for getting more exact value of pH meteres arare more pefered.

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