Paraphrasing Essay Example | Topics and Well Written Essays - 1000 words - 4

Paraphrasing - Essay Example After this, the molar mass of KHP was used to divide the number of grams (KHP) by it that generated the KHP’s number of moles. Next, the volume was calculated after titration. Next, the molarity was calculated using the formula given below: 1.0 g of KHP was measured and then it was dissolved in 70-75 mL distilled water. As the next step, 1 to 5 drops of phenolphthalein was added to the solution. It was done to ensure the change in color after addition of base (NaOH). Next, KHP was dissolved as much as possible in order to get accurate results. After that, the base was dripped into the acid using a buret which was filled with NaOH up to a certain volume. It was done until the color started changing noticeably. A white paper was placed under the glassware to see the change in color clearly. The solution started turning into pink color which was also the end point of the reaction. Next, the volume was calculated after stopping the buret using the formula: . In this part of the experiment, 2.0 mL acetic acid was measured and poured in a 10 mL graduated cylinder. After this, the exact volume was noted and mixed with 70-75 mL water. As the next step, the graduated cylinder was rinsed before adding water in the acid. Next, 1 to 5 drops of phenolphthalein were added to the solution. After this, titration was started slowly in order to avoid a dark pink color. Then, the volume was noted just upon turning of the solution into a light pink color and this was also the end point of the reaction. Next, the volume was calculated using the formula: . In this part, 2.0 mL sulfuric acid was measured and poured in a 10 mL graduated cylinder. After this, the exact volume was noted and 70-75 mL of water was mixed. Next, the graduated cylinder was rinsed before adding water in the acid to ensure pouring of all leftovers in the solution. After this, 1 to 5 drops of phenolphthalein were added to the solution. After this, titration was started