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Q. choose the situation below that would result in an endothermic H solution: A. when H solute is close to H Hydration B. When H solutue > H hydration C. When H Solute < H hydration D When H solvent >> H solute E Not enough information to determine

Solved • Apr 18, 2020

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Q. Common household bleach is usually a 4% (w/V) solution of NaClO sodium hypochlorite. If 150 ml of the bleach solution is diluted to a new volume of 500 ml, what is the pH of the solution? (The pKa of hypochlorous acid is 7.52.)

Solved • Apr 14, 2020

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Q. Lactic acid, HC3H5O3, is a substance found in sour milk products such as yogurt and is produced naturally by fermentation in body cells during normal metabolism and exercise The Ka for lactic acid is 1.38 x 10-4. Its sodium salt, sodium lactate, NaC3H5O3 , is used in foods as a preservative and acidity regulator.It is also used in shampoo products as an effective humectant and moisturizer. Determine the pH of a solution prepared by diluting 6.10 grams of sodium lactate to a final volume of 750ml

Solved • Apr 14, 2020

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Q. Imagine that A and B are cations and X, Y, and Z are anions, and that the following reactions occur: AX(aq) + BY(aq) → no precipitate AX(aq) + BY(aq) → precipitate Which of the following choices is insoluble? a) AX b) AY c) AZ d) BX e) BY f) BZ

Solved • Mar 13, 2020

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Q. Which of the following would you least expect to find in CaCl2(aq)? a) H2O molecules b) CaCl2 molecules c) Ca^2+ ions d) Cl^- ions

Solved • Mar 13, 2020

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Q. Which of the following situations is most favorable for solubility? a) strong attraction particles b) strong attraction between solvent particles c) strong attraction of solute particles to solvent particles.

Solved • Mar 13, 2020

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Q. 1. Give definitions and examples: Solvent: Solute:

Solved • Feb 13, 2020