Homework Answers
ANSWER EXPLANATION
The effect of temperature on equilibrium has to do with the heat of reaction.If you change the temperature of the reaction the equilibrium will shift to counteract that change.
If the temperature is increased the equilibrium will shift to favour the reaction which will reduce the temperature. The endothermic reaction is favoured.
If the temperature is decreased the equilibrium will shift to favour the reaction which will increase the temperature. The exothermic reaction is favoured.
CONCLUSION
Since solubility of PbCl2 increases with increase in temperature reaction is endothermic.
So the statement is false.
Add Answer to:
true or false?
Because the solubility of PbCl2 increases with increased temperature, the dissolution of PbCl2...
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It is found when an unknown solid solute is dissolved in water that the solubility of the solid increases if temperature is increased. What can be determined about the entropy and enthalpy of the dissolution of this unknown solid? entropy is decreased, exothermic O entropy is increased, endothermic not enough information to make a determination entropy is decreased, endothermic entropy is increased,exothermic
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7. Solubility is described in terms of both concentration and temperature. True O False
7. Solubility is described in terms of both concentration and temperature. True O False
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Select the true statement: a. Gas solubility in liquids decreases as the temperature rises, while solid...
Select the true statement: a. Gas solubility in liquids decreases as the temperature rises, while solid solubility in liquids decreases as the temperature rises b. Gas solubility in liquids decreases as the temperature rises, while solid solubility in liquids increases as the temperature rises c. Gas solubility in liquids increases as the temperature rises, while solid solubility in liquids decreases as the temperature rises d. Gas solubility in liquids increases as the temperature rises, while solid solubility in liquids increases...
All questions are true or false A catalyst changes both the equilibrium constant and the rate...
All
questions are true or false
A catalyst changes both the equilibrium constant and the rate of a chemical equilibrium. j. Ifthe temperature of a chemical equilibrium is increased, the reaction will shift in a direction that will lead to the consumption of some of the extra heat. An increase in temperature favors an endothermic reaction over an exothermic reaction. k. nundifis Is ined If a chemical equilibrium is exothermic in the forward direction, it is also exothermic in the...
This is a thermodynamics of urea dissolution lab. Temperature of water was 25.6 C Temperature of...
This is a thermodynamics of urea dissolution lab. Temperature of
water was 25.6 C Temperature of water mixed with urea was 21.7 C
Mass of 25ml of water - 24.5 g Heat capacity of water given: c:
2.184 J/g C Mass of urea is 1.5 g Calculate q and please answer the
questions above. Thanks.
1. Remember for calorimetry that sys - AH' and that you measured surr 2. Calculate AH', using the following equation: 4surr = -Asys 3. The...
Classify each of the statements as true or false. True False Answer Bank The entropy of...
Classify each of the statements as true or false. True False Answer Bank The entropy of a substance increases when a liquid vaporizes to a gas at any temperature. Entropy decreases as the temperature increases. An exothermic reaction is always spontaneous. Product formation is always favored in a reaction with a negative AH° and a negative AS. For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. A reaction will have an equilibrium constant...
As the temperature of a reaction is increased, the rate of the reaction increases because the...
As the temperature of a reaction is increased, the rate of the reaction increases because the A) reactant molecules collide less frequently and with greater energy per collision B) reactant molecules collide with greater energy per collision C) reactant molecules collide less frequently D) activation energy is lowered E) reactant molecules collide more frequently with less energy per collision
U) Indicate if each statement below is true or false (on statement below is true or...
U) Indicate if each statement below is true or false (on statement below is true or false (one error allowed) (4.5 points na 30.97g of phosphorous there are 6.022x10 atoms of phosphorous b) Solubility of gases in Solubility of gases in water increase as the solution temperature increases woments in group 2A show a tendency to lose 2 electrons and become positively charged-2 d) Oxygen is more electronegative than sulfur e) When dissolving 9.0 g NaCl within one liter of...
Number five temperature increases and entropy increases temperature is unchanged and entropy increases temperature increases and...
Number five
temperature increases and entropy increases
temperature is unchanged and entropy increases
temperature increases and entropy us unchanged
temperature increases and entropy decreases
number 6
none
temperature increases and entropy increases
temperature is unchanged and entropy increases
temperature increases and entropy us unchanged
temperature increases and entropy decreases
Number seven
spontaneous at all temperatures
Non-spontaneous at all temperatures
not enough information
spontaneous at low temperature only
spontaneous at high temperature only
5. Choose best answer from drop-down menu: 3...
It is found when an unknown solid solute is dissolved in water that the solubility of the solid increases if temperature is increased. What can be determined about the entropy and enthalpy of the dissolution of this unknown solid? entropy is decreased, exothermic O entropy is increased, endothermic not enough information to make a determination entropy is decreased, endothermic entropy is increased,exothermic
It is found when an unknown solid solute is dissolved in water that the solubility of the solid...
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All
questions are true or false
A catalyst changes both the equilibrium constant and the rate of a chemical equilibrium. j. Ifthe temperature of a chemical equilibrium is increased, the reaction will shift in a direction that will lead to the consumption of some of the extra heat. An increase in temperature favors an endothermic reaction over an exothermic reaction. k. nundifis Is ined If a chemical equilibrium is exothermic in the forward direction, it is also exothermic in the...
This is a thermodynamics of urea dissolution lab. Temperature of
water was 25.6 C Temperature of water mixed with urea was 21.7 C
Mass of 25ml of water - 24.5 g Heat capacity of water given: c:
2.184 J/g C Mass of urea is 1.5 g Calculate q and please answer the
questions above. Thanks.
1. Remember for calorimetry that sys - AH' and that you measured surr 2. Calculate AH', using the following equation: 4surr = -Asys 3. The...
Classify each of the statements as true or false. True False Answer Bank The entropy of a substance increases when a liquid vaporizes to a gas at any temperature. Entropy decreases as the temperature increases. An exothermic reaction is always spontaneous. Product formation is always favored in a reaction with a negative AH° and a negative AS. For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. A reaction will have an equilibrium constant...
As the temperature of a reaction is increased, the rate of the reaction increases because the A) reactant molecules collide less frequently and with greater energy per collision B) reactant molecules collide with greater energy per collision C) reactant molecules collide less frequently D) activation energy is lowered E) reactant molecules collide more frequently with less energy per collision
U) Indicate if each statement below is true or false (on statement below is true or false (one error allowed) (4.5 points na 30.97g of phosphorous there are 6.022x10 atoms of phosphorous b) Solubility of gases in Solubility of gases in water increase as the solution temperature increases woments in group 2A show a tendency to lose 2 electrons and become positively charged-2 d) Oxygen is more electronegative than sulfur e) When dissolving 9.0 g NaCl within one liter of...
Number five
temperature increases and entropy increases
temperature is unchanged and entropy increases
temperature increases and entropy us unchanged
temperature increases and entropy decreases
number 6
none
temperature increases and entropy increases
temperature is unchanged and entropy increases
temperature increases and entropy us unchanged
temperature increases and entropy decreases
Number seven
spontaneous at all temperatures
Non-spontaneous at all temperatures
not enough information
spontaneous at low temperature only
spontaneous at high temperature only
5. Choose best answer from drop-down menu: 3...
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