SCIENCE- rate of reaction #1

SCIENCE
EXPERIMENT ONE: Investigating the effect of temperature on reaction
AIM: I want to investigate the temperature effects the reaction rate
EQUIPMENT: 

• a conical flask, 
• beaker,
•  measuring cylinder,
•  stopwatch,
• black cross on paper, water bath,
•  thermometer,
•  0.1 mol-1 sodium thiosulfate,
•  0.1 mol-1 hydrochloric acids (HCl)

METHOD

1. Put the "X" paper on the bench mat, and put the conical flask.
2. measure 50ml of sodium thiosulfate solution and put into the beaker.
3. record the temperature of the sodium thiosulfate.
4. measure 50ml of HCl and pour this into the conical flask
5. pour sodium thiosulfate into the conical flask, start the stopwatch and swirl the flask. time how long it takes for the cross to disappear when viewed from above (i.e.look down the mouth of the conical flask)
6. wash out the flask thoroughly
7. repeat the experiment, using a water bath to heat the sodium thiosulfate to 30°C, then 40°C . nad finally 50°C. keep the volume of acid the same each time.

RESULTS

1. 19°C took 25.06 seconds
2. 30°C took 9.05 seconds
3. 40°C took 7.05 seconds
4. 50°C took 2.07 seconds 

CONCLUSION

A chemical reaction is when two reactants collide.

They must collide with enough force, correct orientation and catalysts.

As I increase the temperature they will move faster.

which means that rate of the reaction will increase.