Homework Answers
A spontaneous reaction occurs with the application of heat.
During any spontaneous reaction there is change in energy occurs.For this reason some heat is released during the course of reaction.Thermodynamics point of view condition for a spontaneous reaction is change in entropy increase but decrease in enthalpy change.By the variations of temperature this type of reaction occurs.
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A spontaneous reaction occurs ANSWER: with the application of cold. with a catalyst. with the application...
QUESTION 23 Which of the following statements is incorrect? a. A spontaneous process occurs under specified...
QUESTION 23 Which of the following statements is incorrect? a. A spontaneous process occurs under specified conditions without outside intervention. Ob. AGsys --TASuniv c. A nonspontaneous process occurs only if the surroundings continuously supply energy to the system. d. The relationship between AGⓇ and K at 25°C is: if K< 1, AG° <0. e. A spontaneous change may be exothermic or endothermic.
Question 3 2) A reaction that is spontaneous as written will proceed without outside intervention is...
Question 3
2) A reaction that is spontaneous as written will proceed without outside intervention is also spontaneous in the reverse direction has an equilibrium position that lies far to the left is very slow 3) When a system is at equilibrium, A) the reverse process is spontaneous but the forward process is not B) the forward and the reverse processes are both spontaneous C) the forward process is spontaneous but the reverse process is not D) the process is...
If an endothermic reaction occurs spontaneously, then it can be correctly inferred that A) a catalyst...
If an endothermic reaction occurs spontaneously, then it can be correctly inferred that A) a catalyst must be present B) the reaction occurs at a slow rate C) ΔGrxn<0 D) ΔHrxn<0 E) delta S rxn < 0
When a reaction is spontaneous is means that: a. The reaction occurs right away b. All...
When a reaction is spontaneous is means that: a. The reaction occurs right away b. All of these answers are true. c. The reactants are more abundant then the products d. The reactions will release energy
If an endothermic reaction absorbs heat, then why does it feel cold to the touch?
If an endothermic reaction absorbs heat, then why does it feel cold to the touch?Match the words in the left column to the appropriate blanks in the sentence on the right.An endothermic reaction feels cold to the touch because the reaction (acting here as the system) absorbs heat from the surroundings. When you touch the vessel in which the reaction occurs, you, being part of the surroundings, lose heat to the system (the reaction), which makes you feel cold. The...
Suppose that, in the absence of a catalyst, a certain biochemical reaction occurs x times per...
Suppose that, in the absence of a catalyst, a certain biochemical reaction occurs x times per second at normal body temperature (37 °C). In order to be physiologically useful, the reaction needs to occur 2000 times faster than when it is uncatalyzed. Part A By how many kJ/mol must an enzyme lower the activation energy of the reaction to make it useful? Express your answer using two significant figures. PO AQ * o o ? Ea – Eac = kJ/mol
6. Autocatalysis occurs when a reaction product can act as a catalyst for the overall reaction....
6. Autocatalysis occurs when a reaction product can act as a catalyst for the overall reaction. Clearly, this can accelerate the reaction rate, and can lead to fascinating phenomena, such as oscillating reactiosn. Which of the following elementary reactions could make an overall reaction autocatalytic? Explain why. (a) A+B-, C + D (b) A B A+B (c) A+B A+D (d) A+B A +A
3. Write the net ionic equation and calculate AGⓇ for any spontaneous reaction that occurs in...
3. Write the net ionic equation and calculate AGⓇ for any spontaneous reaction that occurs in each mixture. If no reaction occurs, write "no reaction". 1 mol K2S20a, 1 mol Na2SO4, and 1 mol KI are added to 1 L of water (5 pts) a. b. 1 mol ZnCl2, 1 mol SnCl2, and 1 mol CuCl2 are added to 1 L of water (5 pts)
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
n the spontaneous fission of uranium-233, the following reaction occurs: 233U + 1n → 142Ce +...
n the spontaneous fission of uranium-233, the following reaction occurs: 233U + 1n → 142Ce + 82Se + 101n For every mole of 233U that decays, 0.1355 g of mass is lost. How much energy is given off per mole of 233U reacted?
QUESTION 23 Which of the following statements is incorrect? a. A spontaneous process occurs under specified conditions without outside intervention. Ob. AGsys --TASuniv c. A nonspontaneous process occurs only if the surroundings continuously supply energy to the system. d. The relationship between AGⓇ and K at 25°C is: if K< 1, AG° <0. e. A spontaneous change may be exothermic or endothermic.
Question 3
2) A reaction that is spontaneous as written will proceed without outside intervention is also spontaneous in the reverse direction has an equilibrium position that lies far to the left is very slow 3) When a system is at equilibrium, A) the reverse process is spontaneous but the forward process is not B) the forward and the reverse processes are both spontaneous C) the forward process is spontaneous but the reverse process is not D) the process is...
Suppose that, in the absence of a catalyst, a certain biochemical reaction occurs x times per second at normal body temperature (37 °C). In order to be physiologically useful, the reaction needs to occur 2000 times faster than when it is uncatalyzed. Part A By how many kJ/mol must an enzyme lower the activation energy of the reaction to make it useful? Express your answer using two significant figures. PO AQ * o o ? Ea – Eac = kJ/mol
6. Autocatalysis occurs when a reaction product can act as a catalyst for the overall reaction. Clearly, this can accelerate the reaction rate, and can lead to fascinating phenomena, such as oscillating reactiosn. Which of the following elementary reactions could make an overall reaction autocatalytic? Explain why. (a) A+B-, C + D (b) A B A+B (c) A+B A+D (d) A+B A +A
3. Write the net ionic equation and calculate AGⓇ for any spontaneous reaction that occurs in each mixture. If no reaction occurs, write "no reaction". 1 mol K2S20a, 1 mol Na2SO4, and 1 mol KI are added to 1 L of water (5 pts) a. b. 1 mol ZnCl2, 1 mol SnCl2, and 1 mol CuCl2 are added to 1 L of water (5 pts)
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
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