Use this interactive PowerPoint presentation to evaluate these aspects of Titration 1Accuracy in TitrationsAccuracy in Titrations 2Titration MethodTitration Method 3Selecting ResultsSelecting Results 4Titration ImprovementsTitration Improvements

Accuracy in Titration I should add acid from the burette 1 cm 3 at a time. I should do as many repeats as possible to make the results more accurate. Accuracy in Titration Accuracy in Titration Titrations are always accurate so my answers will be correct. I should be very careful with my first titration so that the result is accurate. Titrations are very accurate. They could not be any more accurate.

What was saidWas it correct? (Y / N / Partly) Explanation of your answer I should be very careful with my first titration so that the result is accurate. Titrations are always accurate so my answers will be correct. I should add acid from the burette 1 cm 3 at a time. I should do as many repeats as possible to make the results more accurate. Titrations are very accurate. They could not be any more accurate. Accuracy in Titration

Titration Method It doesn’t matter if the acid or alkali goes in the burette. It doesn’t matter which indicator I use, they all change colour at the same time. Titration Method Titration Method I should wash out the flask and make sure it is dry before my next repeat. My eye level is very important when I am taking readings. I think that I should do a titration twice. This will give me an average so will be right.

What was saidWas it correct? (Y / N / Partly) Explanation of your answer My eye level is very important when I am taking readings. I should wash out the flask and make sure it is dry before my next repeat. It doesn’t matter if the acid or alkali goes in the burette. It doesn’t matter which indicator I use, they all change colour at the same time. I think that I should do a titration twice. This will give me an average so will be right. Titration Method

Selecting Results A difference of 1 cm 3 between results is close enough. I should leave the first result out of the average. Selecting Results Selecting Results Taking an average of three results would be best. Two experiments are enough. They will give me an average. I need two accurate results within 0.2 cm 3 of each other.

What was saidWas it correct? (Y / N / Partly) Explanation of your answer Two experiments are enough. They will give me an average. Taking an average of three results would be best. I should leave the first result out of the average. A difference of 1 cm3 between results is close enough. I need two accurate results within 0.2 cm3 of each other. Selecting Results

Titration Improvements It is very difficult to improve the method because the pipette and burette are so accurate. I would use a measuring cylinder next time instead of a pipette. It would be quicker. Titration Improvements Titration Improvements I should make sure that I always use two drops of indicator – not three. I should try to add the acid from the burette one drop at a time from the start. I think that next time we should use more accurate apparatus.

What was saidWas it correct? (Y / N / Partly) Explanation of your answer I should make sure that I always use two drops of indicator – not three. I would use a measuring cylinder next time instead of a pipette. It would be quicker. I should try to add the acid from the burette one drop at a time from the start. It is very difficult to improve the method because the pipette and burette are so accurate. I think that next time we should use more accurate apparatus. Titration Improvements