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How Does The Ph Meter Affect The Determination Of Acidic Acid

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Throughout the experiment, different solutions were tested in order to determine if the solution as neutral, acidic, or basic. The different pH values of the solutions indicated different properties of each one. The pH meter helped aide the experiment by indicating what the pH of the experiment was, which then allowed for the discovery of the experimental Kh. When looking at the results, there were 7 different solutions used, excluding the boiled and unboiled water. With each reading of the pH meter, it was possible to decide whether the solution was basic or acidic. If the solution was basic, it would be higher than 7. If the solution was acidic, it would be less than 7. If the solution was neutral, it would be equal to about 7, which is roughly the pH of water. …show more content…

NaCl had a pH of 6.5, Cu(NO3)2 had a pH of 3.63, and ZnCl2 and KAl(SO4)2 had 5.41 and 3.11 respectively. This indicates that these solutions are acidic. From this discovery, it is possible to decide which hydrolysis constant to use. In the case of acidic solutions, the acid hydrolysis constant is used, where [H3O+] and [B] are found by taking 10 to the negative pH power. These values are then plugged into the acid hydrolysis equation. The results also show that NaOOCCH, NH4Cl, and Na2CO3 were all solutions with a pH greater than 7. NaOOCCH had a pH of 8.15, NH4Cl had a pH of 7.58, and Na2CO3 had a pH of 10.93. These ranges all indicate that the solutions are greater than 7, meaning they are basic. From this discovery, it is possible to decide which hydrolysis constant to use once again. In the case of basic solutions, the base hydrolysis constant is used, where [HA] and [OH-] are found by taking 10 to the -14 plus the pH power. These values are then plugged into the base hydrolysis

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