Chapter 7 Problem Set Worksheet With Unit v willve less homework and fever easy
ID: 1015386 • Letter: C
Question
Chapter 7 Problem Set Worksheet With Unit v willve less homework and fever easy problems such as definitions. I expect you will do the odd-numbered and practice to understand the material before attlempting the homework The homework repeesents what you will find on the exam This is to prepare you for your nursing courses when it will be your responsibility to determine how you study and what material youa need to emphasize. If you have not been doing the optional practice and odd-numbered problems you will do worse on the exam and homework Plcase provide the answers on the accompanying answer shect, and enly hand in the answer sheet. Keep these questions to help you review for the esam 1. Write the appropriate word in each of the underlined pairs: In an exothermic reaction the system gainsloses heat from to the surroundings. 2. Which of the following represents an exothermic reaction? B) A(g) B(g) + 33 kcal D) Both A and B are exothemic reactions E) Both A and C are exothermic reactions 3. When a cold-pack is activated, a chemical reaction occurs and the tomperature of the pack contents drops sharply. Which of the following is a cormect description of the reaction occurring in the pack? A The reaction is exothermic; NP>0. B) The reaction is exothermic. AJF 0. D) The reaction is endothermic; 0. E) None of the choices are correct What is the measare of the randomness or disonder of a chemical systenm? A) ener C) entropy D) cnthalpy E) free energy 5. In general, which state of mater has the lowest entropy A) solid B) liquid C) gas PapeExplanation / Answer
Answer-1: Gain of energy from the surrounding = Endothermic Process
Loss of energy to the surrounding = Exothermic Process
Answer- 2: The energy is released on the product side therefore option B is correct.
Answer-3: During reaction, energy is released therefore. Option B is correct.
Answer-4: Option C ( Entropy)
Answer-5: Solid has least randomness therefore least entropy. Hence Option A
Answer-6: Molecules in steam has maximum K.E. and randomness. Hence Option A
Answer-7: State moves to more systematic arrangement therefore Option A
Answer -8: G= H – TS
Where G = Gibbs free energy; H= Enthalpy; S = Entropy; T= Temperature in Kelvin
If = -ve and then the nature of process is uncertain because reaction will be spontaneous when G is negative. This can be possible easily when Enthalpy(H) is Negative and Entropy (S) is positive.
Answer-9: Option A
Answer-10: option B
Answer- 11: Option E
Answer- 12- Kp = PCO2
Answer- 13: At equilibrium, if any physical changes are accompanied, then the reaction will shift in direction which will neutralize the change to regain the equilibrium stage.
Eg. In exothermic reaction, the increase in temperature shifts the reaction to backward direction.
Addition of product to reaction in equilibrium stage, shift the reaction to backward direction.
Answer- 14: To neutralize the effect of ammonia, the reaction moves to backward direction therefore
Option C
Answer- 15: To maintain the equilibrium, the reaction goes in forward direction. Hence True.
Answer-1: Gain of energy from the surrounding = Endothermic Process
Loss of energy to the surrounding = Exothermic Process
Answer- 2: The energy is released on the product side therefore option B is correct.
Answer-3: During reaction, energy is released therefore. Option B is correct.
Answer-4: Option C ( Entropy)
Answer-5: Solid has least randomness therefore least entropy. Hence Option A
Answer-6: Molecules in steam has maximum K.E. and randomness. Hence Option A
Answer-7: State moves to more systematic arrangement therefore Option A
Answer -8: G= H – TS
Where G = Gibbs free energy; H= Enthalpy; S = Entropy; T= Temperature in Kelvin
If = -ve and then the nature of process is uncertain because reaction will be spontaneous when G is negative. This can be possible easily when Enthalpy(H) is Negative and Entropy (S) is positive.
Answer-9: Option A
Answer-10: option B
Answer- 11: Option E
Answer- 12- Kp = PCO2
Answer- 13: At equilibrium, if any physical changes are accompanied, then the reaction will shift in direction which will neutralize the change to regain the equilibrium stage.
Eg. In exothermic reaction, the increase in temperature shifts the reaction to backward direction.
Addition of product to reaction in equilibrium stage, shift the reaction to backward direction.
Answer- 14: To neutralize the effect of ammonia, the reaction moves to backward direction therefore
Option C
Answer- 15: To maintain the equilibrium, the reaction goes in forward direction. Hence True.
Answer-1: Gain of energy from the surrounding = Endothermic Process
Loss of energy to the surrounding = Exothermic Process
Answer- 2: The energy is released on the product side therefore option B is correct.
Answer-3: During reaction, energy is released therefore. Option B is correct.
Answer-4: Option C ( Entropy)
Answer-5: Solid has least randomness therefore least entropy. Hence Option A
Answer-6: Molecules in steam has maximum K.E. and randomness. Hence Option A
Answer-7: State moves to more systematic arrangement therefore Option A
Answer -8: G= H – TS
Where G = Gibbs free energy; H= Enthalpy; S = Entropy; T= Temperature in Kelvin
If = -ve and then the nature of process is uncertain because reaction will be spontaneous when G is negative. This can be possible easily when Enthalpy(H) is Negative and Entropy (S) is positive.
Answer-9: Option A
Answer-10: option B
Answer- 11: Option E
Answer- 12- Kp = PCO2
Answer- 13: At equilibrium, if any physical changes are accompanied, then the reaction will shift in direction which will neutralize the change to regain the equilibrium stage.
Eg. In exothermic reaction, the increase in temperature shifts the reaction to backward direction.
Addition of product to reaction in equilibrium stage, shift the reaction to backward direction.
Answer- 14: To neutralize the effect of ammonia, the reaction moves to backward direction therefore
Option C
Answer- 15: To maintain the equilibrium, the reaction goes in forward direction. Hence True.
Answer-1: Gain of energy from the surrounding = Endothermic Process
Loss of energy to the surrounding = Exothermic Process
Answer- 2: The energy is released on the product side therefore option B is correct.
Answer-3: During reaction, energy is released therefore. Option B is correct.
Answer-4: Option C ( Entropy)
Answer-5: Solid has least randomness therefore least entropy. Hence Option A
Answer-6: Molecules in steam has maximum K.E. and randomness. Hence Option A
Answer-7: State moves to more systematic arrangement therefore Option A
Answer -8: G= H – TS
Where G = Gibbs free energy; H= Enthalpy; S = Entropy; T= Temperature in Kelvin
If = -ve and then the nature of process is uncertain because reaction will be spontaneous when G is negative. This can be possible easily when Enthalpy(H) is Negative and Entropy (S) is positive.
Answer-9: Option A
Answer-10: option B
Answer- 11: Option E
Answer- 12- Kp = PCO2
Answer- 13: At equilibrium, if any physical changes are accompanied, then the reaction will shift in direction which will neutralize the change to regain the equilibrium stage.
Eg. In exothermic reaction, the increase in temperature shifts the reaction to backward direction.
Addition of product to reaction in equilibrium stage, shift the reaction to backward direction.
Answer- 14: To neutralize the effect of ammonia, the reaction moves to backward direction therefore
Option C
Answer- 15: To maintain the equilibrium, the reaction goes in forward direction. Hence True.
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