A) A) pH measurement for acid and base solutions
Solution | Indicator | |||||
pH paper | pH meter | Methyl red | Methyl orange | Alizarin yellow | ||
HCl | 0.01M | | | | | |
1.0M | | | | | | |
CH3COOH | 0.1M | | | | | |
1.0M | | | | | | |
NaOH | 0.1M | | | | | |
1.0M | | | | | | |
NH3 | 0.1M | | | | | |
1.0M | | | | | |
B) B) pH measurement of salt solutions
salt solutions | pH paper | Universal indicator | Acidity |
NaCl 0.1M | | | |
CH3COONa 0.1M | | | |
NH4NO3 0.1M | | | |
C) C) Determination of the dissociation constant of a weak acid, Ka
Burette reading | mL |
initial | |
final | |
Volume NaOH used | |
pH meter reading : ____
pH = pKa + log [salt]
[acid ]
pH = pKa
Ka = [H+] = _______
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