(a)
Interpretation:
The reason for no effect of the presence of sodium carbonate in sodium hydroxide solution on the experimental results should be determined.
Concept introduction:
The substance that releases
1. Strong Bases
2. Weak Bases
The bases that dissociate completely into the respective ions when dissolved in the solution is known as strong bases while the bases that dissociate partially into the respective ions when dissolved in the solution is known as liquid bases.
(b)
Interpretation:
The reason for effect of the presence of sodium carbonate more than
Concept introduction:
The substance that releases
1. Strong Bases
2. Weak Bases
The bases that dissociate completely into the respective ions when dissolved in the solution is known as strong bases while the bases that dissociate partially into the respective ions when dissolved in the solution is known as liquid bases.
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General Chemistry: Principles and Modern Applications (11th Edition)
- (a) A 20.00 mL solution of 1.50 M methylamine, CH3NH2 is titrated with 1.50 M solution of hydrochloric acid, HCl. Equation is as given below. [Kb for CH3NH2 = 4.38 × 10-4] CH3NH2(aq) + HCl(aq) → CH3NH3Cl(aq) (i) Calculate the pH of the solution when 12.00 mL of HCl is added. (ii) Identify whether the solution in (i) is before, at or after equivalence point. (iii) Identify whether the salt solution at equivalence point is acidic, neutral or basic. (b) In a titration of CH3COOH with aqueous NaOH solution, 6.50 × 10-3 mole of CH3COONa is formed at equivalence point. If the total volume at equivalence point is 60.0 mL, calculate the pH of the solution. [Ka of CH3COOH is 1.79 × 10-5 and Kb of CH3COOis 5.59 × 10-10]arrow_forwardAssume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 3.00 ✕ 102 mL of solution and then titrate the solution with 0.148 M NaOH. C6H5CO2H(aq) + OH-(aq) C6H5CO2-(aq) + H2O(ℓ) What are the concentrations of the following ions at the equivalence point? Na+, H3O+, OH-C6H5CO2- M H3O+ M OH-arrow_forwardAssume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 3.00 ✕ 102 mL of solution and then titrate the solution with 0.148 M NaOH. C6H5CO2H(aq) + OH-(aq) C6H5CO2-(aq) + H2O(ℓ) What are the concentrations of the following ions at the equivalence point? Na+, H3O+, OH-C6H5CO2- M Na+ M H3O+ M OH- M C6H5CO2-What is the pH of the solution?arrow_forward
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