Question: A 10.0 mole% aqueous sulfuric acid solution (SG = 1.27) is to be titrated to neutrality at 25C with a 3.00-molar caustic soda (sodium hydroxide)

A 10.0 mole% aqueous sulfuric acid solution (SG = 1.27) is to be titrated to neutrality at 25°C with a 3.00-molar caustic soda (sodium hydroxide) solution (SG = 1.13): H₂SO₄ (aq) + 2 NaOH (aq) Na₂SO₄ (aq) + 2 H₂O (l)

(a) Calculate the required volume ratio (cm3 caustic solution lcm3 acid solution).

(b) Calculate the standard heats of formation (kJ/mol solute) of each of the three solutions involved in this process and the heat released (kJ/crn3 acid solution neutralized) if the reactants and products are all at 25°C. The heat of solution of sodium sulfate is – 1.17 kJ/mol. Assume that Q = ΔH for the process.

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a HSO4 aq 2NaOHaq NaSO4 aq 2HO1 Basis 1 mol HSO4 soln 2603 g soln 1 cm 010 mol HSO4 9808 gmo... View full answer

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