7 crush one tablet into a fine powder using the

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7.Crush one tablet into a fine powder using the mortar and pestle.8.Break another tablet into half, leaving the remaining tablet whole.9.At the same time, drop the whole tablet, half-broken tablet and the crushed tablet into separate beakers with 20mLs of HCl. It should look similar to Figure 1. 10.Figure 1 Tablets dissolving in acid11.Start the stopwatch as soon as the tablet drops into the acid. 12.Lap the stopwatch every time the tablet dissolves, stopping the timer when the third tablet has finished fizzing. 13.Record and tabulate the times at which the tablets have completely dissolved. 123
Christopher Ong 11BIOL414.Return the equipment and clean the bench space. Results:Type of TabletTime taken to dissolveMinutesSeconds1. Whole2.751652. Half-broken 2.521513. Crushed2.00120Discussion:1.It is necessary to avoid contact between hydrochloric acid and the skin/eyes because it is corrosive, and can cause burns on contact. If it comes in contact with the eyes, it can result inblindness, depending on the strength of the acid. To prevent contact of hydrochloric acid with the eyes, safety glasses can be worn to protect from splashes. To prevent contact with the skin, gloves can be worn, or a dropper can be used to handle the liquid. To reduce the danger of the acid, a weaker or more diluted acid can be used.

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