AQA A-Level Chemistry - Acids and Bases

AQA A-Level Chemistry - Acids and Bases
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1. -log[H+] Calculating pH from H+ ion concentration

2. [H+][OH-] The ionic product of water Kw

3. [H+][A-]/[HA] Ka for weak acids

4. Maintain Temper- How to improve the accuracy of an experiment when constructing a pH curve
ature

5. Equivalence The mid point of a titration curve
Point

6. Colourless to Colour change with Phenolphthalein from acid to alkali
Pink

7. Pink to Colour- Colour change with Phenolphthalein from alkali to acid
less

8. Strong Base Strength of base required to use phenolphthalein

9. Any Acid Strength of acid required to use phenolphthalein

10. Strong Strength of acid required to use methyl orange

11. Any Base Strength of base required to use methyl orange

12. Red to Yellow Colour change of Methyl Orange from acid to alkali

13. Yellow to Red Colour change of Methyl Orange from alkali to acid

14. HA Is this method used for Excess HA or OH- in the reaction of a weak acid and strong
base?
1) Calculate moles HA (it is still HA and not H+ as it is a weak acid)
2) Calculate moles OH-
3) Calculate moles XS HA or OH
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