# A-level chemistry Equations

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#1
What equations/ formulas are provided in the exam and which are you expected to learn?
For instance kc you need to learn and arrhenius is given

If anyone knows please share as it will be useful for others too
1
1 year ago
#2
(Original post by DreamerBeliever)
What equations/ formulas are provided in the exam and which are you expected to learn?
For instance kc you need to learn and arrhenius is given

If anyone knows please share as it will be useful for others too
Hi this depends on your exam board
Search up a data sheet for your exam
e.g one for ocr = https://filestore.aqa.org.uk/resourc...A-7405-SDB.PDF
this is what you get in the exam 100%

0
1 year ago
#3
For AQA (to learn):

1. All mol equations; solids and solutions, density equation
3. Ideal gas equation
4. % yield and atom economy
5. Concentrations of solutions, concentrations of a new diluted solution
6. Heat energy change equation (Calorimetry) and molar enthalpy change equation
7. Hess' Law equations (formation and combustion)
8. Kc and Kp
9. Gibbs free energy change
10. Calculating entropy change equation
11. EMF equation
12. pH equations
13. Ka and pKa equations
14. % uncertainty

That's all of the top of my head, may be a few more
Last edited by naem071; 1 year ago
3
1 year ago
#4
Arrhenius is given, but you should know how to calculate Ea and A values from the graph (A= antilog of lnA).

15. Atom economy
16. Calculating rates from a graph
0
#5
Thank you , ill check out the aqa site
(Original post by CheeseIsVeg)
Hi this depends on your exam board
Search up a data sheet for your exam
e.g one for ocr = https://filestore.aqa.org.uk/resourc...A-7405-SDB.PDF
this is what you get in the exam 100%

0
#6
Thanks this is immensely useful
(Original post by naem071)
For AQA (to learn):

1. All mol equations; solids and solutions, density equation
3. Ideal gas equation
4. % yield and atom economy
5. Concentrations of solutions, concentrations of a new diluted solution
6. Heat energy change equation (Calorimetry) and molar enthalpy change equation
7. Hess' Law equations (formation and combustion)
8. Kc and Kp
9. Gibbs free energy change
10. Calculating entropy change equation
11. EMF equation
12. pH equations
13. Ka and pKa equations
14. % uncertainty

That's all of the top of my head, may be a few more
0
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