Scelta multipla
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 200.0 mL of HNO3. The Kb of NH3 is 1.8 × 10^-5.
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18. Aqueous Equilibrium
Titrations: Weak Base-Strong Acid
Indietro18. Aqueous Equilibrium
Titrations: Weak Base-Strong Acid
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- Scelta multipla
Consider the titration of 100.0 mL of 0.100 M CH3NH2 with 0.250 M HNO3 at the equivalence point. What would be the pH of the solution at the equivalence point? The Kb of CH3NH2 is 4.4 × 10−4.
881views2rank - Domanda aperta
What quantity of NAG3 was required to reach the equivalence point in the titration?
697views - Scelta multipla
Calculate the pH of the solution resulting from the mixing of 75.0 mL of 0.100 M NaC2H3O2 and 75.0 mL of 0.30 M HC2H3O2 with 0.0040 moles of HBr.
1089views1rank2comments - Scelta multiplaThe plot below illustrates which type of titration?
1054views - Scelta multiplaConsider the titration of a 26.0 mL sample of 0.175 M CH3NH2 (Kb = 4.4 × 10⁻⁴) with 0.150 M HBr. Determine the pH at 5.0 mL of added acid.287views
- Scelta multiplaWhat is the pH of a solution when 40.00 mL of 0.1000 M HCl is added to a 50.00 mL aliquot of 0.1200 M ethylamine (CH3CH2NH2) with a Kb of 5.6 x 10^-4?342views
- Scelta multiplaConsider the titration of a 26.0-mL sample of 0.175 M CH3NH2 (Kb = 4.4 × 10^(-4)) with 0.150 M HBr. Determine the pH at one-half of the equivalence point.330views
- Scelta multipla
In order to create a buffer 7.321 g of potassium lactate is mix with 550.0 mL of 0.328 M lactic acid, HC3H5O3. What is the pH of the buffer solution after the addition of 300.0 mL of 0.100 M hydrobromic acid, HBr? The Ka of HC3H5O3 is 1.4 × 10−4.
978views4rank - Scelta multiplaConsider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8×10⁻⁵) with 0.20 M HNO3. Calculate the pH after the addition of 50.0 mL of the titrant at 25 °C.403views
- Scelta multiplaWhat is the approximate pH at the equivalence point of a weak base-strong acid titration if 50.00 mL of aqueous ammonia (NH3) requires 37.10 mL of 0.1087 mol L^-1 HCl? pKb = 4.75 for ammonia. Report your answer to 2 decimal places.420views