kinetics

Question 1

explain the of reaction practical

Answer 1

-Place a flask ontop of a piece of paper with a cross on it in marker
- add 50cm^3 of sodium thiosulfate to the flask
- add 5cm^3 of dilute HCl to the flask and swirl to mix the solutions
- immediately start a timer and record the change
-make sure to look down through the neck of the flask to get an accurate results
-stop the timer when the cross disappears

Question 2

what is a catalyst

Answer 2

speeds up the rate of reaction by creating an alternative route with lower activation energy

Question 3

how does a catalyst affect the shape of the curve

Answer 3

it wont affect the shape, it will just lower Ea