Strong mountain - strong Base titrationHCl(aq) + NaOH(aq) -----> NaCl(aq) + H2O(l)

At equivalence the only varieties present will certainly be NaCl(aq) & H2O(l)

The equipment of a salt the a solid acid and a solid base will have a pH=7

NaCl(aq) will have actually a pH=7

A an ideal indicator would be bromothymol blue (pH variety 6.2 - 7.6) or phenol red (pH selection 6.8 - 8.4)

Strong acid - Weak base titrationHCl(aq) + NH3(aq) -----> NH4Cl(aq)

NH4Cl is the salt the a solid acid & a weak base, therefore a equipment of NH4Cl will have a pH Weak mountain - strong Base titrationCH3COOH(aq) + NaOH(aq) -----> CH3COONa(aq) + H2O(l)

CH3COONa is the salt of a weak mountain & a strong base, therefore a systems of CH3COONa will have a pH > 7 (CH3COO- is a weak base)

A suitable indicator would be phenolphthalein (pH variety 8.3 - 10.0) or thymol blue (pH 8.0 - 9.6)


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∙ 9y ago
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