How Concentration and Temperature Affects the Rate of Reaction

First I will set up the apparatus as show above. I will add 1.5 grams

Title: The Effect Temperature of Sodium Thiosulfate Has On The Rate of Reaction with Hydrochloric Acid

3.0g of salicylic acid was weighed then 3.0mL of acetic anhydride and 6 drops of 85% H3PO4 were added to it. The mixture was warmed over a water bath for 5 minutes while stirring. After warming, 20 drops of distilled water was slowly added. 15mL of water was added then the solution was heated until it became clear. It was allowed to cool and was placed in an ice bath until the solution becomes cloudy. Using pre-weighed filter paper, the mixture was filtered and was allowed to dry in the filter paper.

mL cylinder to the beaker on the stir plate and empty it into the beaker. Place the pH probe in the beaker and record the pH in the data table. Drag the beaker to the red disposal bucket. Double-click the bottle of NaHCO3 to move it to the Stockroom counter. Repeat steps 5 and 6 for KNO3.

Hypothesis: If the temperature (I.V.) of materials in the reaction are increased, the reaction time (D.V.) will decrease.

It is expected that the concentration of hydrochloric acid will increase the rate of the reaction between magnesium ribbon and hydrochloric acid. By increasing the concentration of

4.Measure 35mL of warm water and add them into each of the 4 test tubes at about roughly the same time. It is essential that the water is warm. Do not seal the test tube.

These results proved my hypothesis correct. The reaction between the magnesium and the hydrochloric acid did produce heat, because of the sharing of electrons. In the future, I would recommend using a burette instead of a pipette. While adding the acid with the pipette, I noticed there were bubbles within the stem, that may have altered how much acid was added to the test tube. This potentially could void the final results, due to excessive amounts of hydrochloric acid.

Setup the 6 test tubes in the rack, place a little crystals of NaCl, KI and benzoic acid. Add 10 drops of cyclohexane, toluene, and water.

When it is almost neutralized, pour possible minimum amount of sodium hydroxide for a fair result.

Acidified or heated conditions will have no impact

reaction rate increases. If the temperature of an enzyme gets to high the reaction rate will slow

6) The Bunsen burner will be lit using a match, put on the blue flame

was too fast to measure and so for my scale to reach above that, I

Experiment to investigate factors affecting the rate of reaction between magnesium ribbon and hydrochloric acid