| What exactly is the Rate of Reaction? | -This is simply how fast the Reaction happens. |
| How can you Measure the Rate of Reaction? Give the Formula for it | -You can Measure it via seeing how Quickly the Reactant are used up, or how Quickly the Products are Formed
-Rate of Reaction = Amount of Reactant used OR Amount of Product formed / Time |
| How can Precipitation be used to measure the Rate of Reaction? | -This method can work for Reactions that mixing 2 Transparent Solutions make an Obscure Solution
-Simply react the 2 Transparent Solutions in a Flask, that itself is on the top of an X
-Time how long it takes for the X to be not seen anymore using a Stopwatch |
| Any problems with using the Precipitation Test to measure the Rate of Reaction? | -This can be Subjective, cause it uses the Eyesight to say when the X is gone, and therefore people may not agree when the X 'Goes' |
| How can the Change in Mass be used to measure the Rate of Reaction? | -Using a Mass Balance, and a Reaction that makes a Gas Product, you can measure the Rate of Reaction
-As the Gas is Released, the Mass Balance will show a Decrease of Mass, because the Gas is not Accounted for [So Closed System wouldn't work here]
-You can then make a Graph, with the Change in Mass in the Y Axis, and Time in the X Axis |
| Any problems with using the Change in Mass test to measure the Rate of Reaction? | -Since a Gas is Released, you need to make sure its a Gas that is not Harmful, and also be aware of the Surroundings |
| Why is Cotton Wool used for the Change in Mass test? | -This is because it allows Gases, and only Gases, to pass through |
| How can the Volume of Gas given off be used to measure the Rate of Reaction? | -This uses a Gas Syringe to see the Volume of Gas given Off
-More Gas given off, in a Given time, equals Faster the Reaction
-You can then make a Graph, with Gas Volume on the y Axis, and Time on the X axis |
| Any problems with using the Volume of Gas given off Test to measure the Rate of Reaction? | -If the Reaction is too Violent, then the Syringe may have its Plunger blown out. |
| How can you prove that the Surface Area can affect the Rate of Reaction? | -First, have Marble Chips inside a Dilute Hydrochloric Acid Solution, with a Gas Syringe connected at the Top, for the Carbon Dioxide
-Them, in a set amount of time, measure the Amount of Gas Produced
-Make a Graph, with Volume of Gas on Y Axis, and Time on X Axis
-Then Repeat this Experiment, with all the Variables the same, EXCEPT crunch the Marble Chips even more, and then Record it on the Graph
-Then, use Powdered Chalk, which is pretty much the Same Thing.
-What you will Evidently see, is that the Finer, and bigger the Surface area: Volume Ratio is, the Materials are, the Faster the Reaction will be. |
| How can Reacting Magnesium Metal with Hydrochloric Acid measure the Rate of Reaction? | -This is because this Reaction gives off Hydrogen Gas, so we can use the 'Change in Mass' Test.
-This time, change the Concentration of the Acid, and then Plot those Results into a Graph, with Loss in Mass on the Y Axis, and the Time on the X Axis
-What you will see is that the Higher Acidic Concentration is more Faster then the Dilute Acidic Concentration. |
