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Effect Temperature reaction rate
- 1. By J. Carlos MartĂnez TOPIC 1. LAB ACTIVITY 2 1r. Batx. ÂĄThe effect of temperature changes on reaction rate!
- 3. MATERIALS, REQUIREMENTS Timer Glasses Gloves Heater 3 Syringes. White paper Thermometer Distilled water Graduated Cylinder 100 cm3 glass beaker 600 cm3 glass beaker 0,2 M Oxalic acid 1 M Sulphuric acid 0,02 M Potassium permanganate
- 4. Experiment 1 Place 5 cm3 of sulphuric acid and 2 cm3 of potassium permanganate in an Erlenmeyer flask. Put in the 600 cm3 distilled water. Put the Erlenmeyer flask into the 600 cm3 beaker. Put the heater into the 600 cm3 beaker and heat the distilled water. When the solution that is in the Erlenmeyer flask arrives to 40Âș C, we put off the flask. Measure the time with the timer until the solution changes its colour. In 40Âș C, thesolutionchangeditscolour in 135 seconds.
- 5. Experiment 2 Place 5 cm3 of sulphuric acid and 2 cm3 of potassium permanganate in an Erlenmeyer flask. Put in the 600 cm3 distilled water. Put the Erlenmeyer flask into the 600 cm3 beaker. Put the heater into the 600 cm3 beaker and heat the distilled water. When the solution that is in the Erlenmeyer flask arrives to 50Âș C, we put off the flask. Measure the time with the timer until the solution changes its colour. In 50Âș C, thesolutionchangeditscolour in 48 seconds.
- 6. Experiment 3 Place 5 cm3 of sulphuric acid and 2 cm3 of potassium permanganate in an Erlenmeyer flask. Put in the 600 cm3 distilled water. Put the Erlenmeyer flask into the 600 cm3 beaker. Put the heater into the 600 cm3 beaker and heat the distilled water. When the solution that is in the Erlenmeyer flask arrives to 60Âș C, we put off the flask. Measure the time with the timer until the solution changes its colour. In 60Âș C, thesolutionchangeditscolour in 25 seconds.
- 7. Experiment 4 Place 5 cm3 of sulphuric acid and 2 cm3 of potassium permanganate in an Erlenmeyer flask. Put in the 600 cm3 distilled water. Put the Erlenmeyer flask into the 600 cm3 beaker. Put the heater into the 600 cm3 beaker and heat the distilled water. When the solution that is in the Erlenmeyer flask arrives to 70Âș C, we put off the flask. Measure the time with the timer until the solution changes its colour. In 70Âș C, thesolutionchangeditscolour in 8 seconds.
- 8. GRAPH Temperature (ÂșC) Time (sec)
- 9. Results REACTION: 5(COOH)2 (aq) + 6H+ + 2MnO4- 2Mn2+(aq) + 10CO2 (g) + 8H2O(l)
- 10. Questions State the aim of the experiment. I think that the aim of the experiment is that we can see how afects the temperature in a solution that it is changing its colour. State two factors which had to be kept constant in the experiments. The volume of the different substances and the same substances (Oxalic acidâŠ) How was the rate of the reaction determined? The rate of reaction was determined by the temperature. If the temperature increases, the rate of reaction increases.
- 11. CONCLUSION My conclusion is this: When we increase the temperature of the solution, the time of change colour decreases because the rate of reaction increases.