c6: the rate and extent of chemical change Flashcards
1
Q
how can one find rate of reaction btw marble chips and hydrochloric acid
A
1) change in mass from reactants to products / time
2) collecting gas in gas syringe, find volume off gas / time
2
Q
what does exothermic mean
A
energy is released to surroundings
3
Q
what does endothermic mean
A
energy is taken in from surroundings
4
Q
how does a catalyst increase the rate of reaction
A
- (high sa to volume ratio)
- provides a different pathway/ reaction route
5
Q
in the haber process, where is hydrogen obtained from
A
natural gas
6
Q
in the haber process, where is nitrogen obtained from
A
air
7
Q
what is used as a catalyst in haber process
A
iron
8
Q
what colour is anhydrous copper sulphate
A
white/colourless
9
Q
what colour is hydrated copper sulphate
A
blue
10
Q
what happens to the unreacted nitrogen and hydrogen from the haber process
A
recycled/ reused
11
Q
A
