A negative heat of solution indicates that: w) an endothermic dissolving process occurs x) solute solubility increases with rising solution temperature y) solute solubility decreases with rising solution temperature z) super-saturation conditions exist

A negative heat of solution indicates that: w) an endothermic dissolving process occurs x) solute solubility increases with rising solution temperature y) solute solubility decreases with rising solution temperature z) super-saturation conditions exist
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ANSWER: Y -- SOLUTE SOLUBILITY DECREASES WITH RISING SOLUTION TEMPERATURE
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If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as (A) Solubility increases as temperature increases (B) Solubility increases as temperature decreases (C) Solubility is independent of temperature (D) Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution

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Last Answer : ANSWER: Z -- SOLVENT IS WATER

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Last Answer : ANSWER: Z -- HEAT CAPACITY IS THE SAME FOR ALL NOBLE GASES 

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Solubility of a gas in a liquid exhibits what type proportionality to the liquid temperature? w) direct x) inverse y) logarithmic z) exponential

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Last Answer : ANSWER: W -- PHYSICAL PROPERTIES

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Which of the following terms has as its definition: a mixture having continuous and dispersed phases? w) colloid x) solute y) suspension z) solvent

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Which of the following concentration expressions is defined as the number of moles of solute per kilogram of solvent: w) molarity x) molality y) normality z) equivalents

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Last Answer : ANSWER: X -- DECREASES

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Last Answer : ANSWER: Z -- THE SUM OF THE FORCES ACTING ON THE BODY MUST BE EQUAL TO ZERO.

pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in the pH 8 solution. x) There are 1,000 times more hydrogen ions in the pH 5 solution. y) There are 3 times more hydrogen ions in the pH 8 solution. z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

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Last Answer : (B) Decreases

With increase in temperature, the mutual solubility of two liquids (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases exponentially

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Last Answer : (A) Increases

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