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A buffer is prepared by dissolving HF and NaF in water. Which of the following is...
IF ÄH and ÄS are both negative for a reaction, then the reaction is: a. nonspontaneous...
IF ÄH and ÄS are both negative for a reaction, then the reaction is: a. nonspontaneous at low temperatures and spontaneous at high temperatures. b. spontaneous at low temperatures and nonspontaneous at high temperatures. C. spontaneous at all temperatures. d. nonspontaneous at all temperatures. e. none of the choices given above Suppose that AH° = +95.1 kJ and AS° =-0.192 kJ/K for a chemical reaction. What is AG at 600 K? a. +20.1 kJ b.-20.1 kJ c. +152.3k) d.+210.3 kJ...
QUESTION 3 Which of the following statements is true regarding a buffer system of HF acid...
QUESTION 3 Which of the following statements is true regarding a buffer system of HF acid and its salt, NaF? The HF neutralizes the added acid. The HF neutralizes the added base. The NaF neutralizes the added H20. The HF is not a necessary component.
For the reaction N2(g) + 3H2(g) = 2 NH3(g), what is AG (in kJ) at 298...
For the reaction N2(g) + 3H2(g) = 2 NH3(g), what is AG (in kJ) at 298 K when the pressures of the gases are: P(N2) = .13 atm P(H2) = 6.2 x 10-5 atm P(NH3) = 1.8 atm? +1.73 +47.0 0 -33.0 0-113 0 -2.49
For the reaction N2(g) + 3 H2(g) = 2 NH3(g), what is AG (in kJ) at...
For the reaction N2(g) + 3 H2(g) = 2 NH3(g), what is AG (in kJ) at 298 K when the pressures of the gases are: P(N2) .13 atm P(H2) = 6.2 x 10-5 atm P(NH3) = 1.8 atm? O +47.0 O-113 O-2.49 0 -33.0 O +1.73
In which reactions is the AS rxn positive CIO(g) + O2(g) - CI(g) + 2O2(8) RXN...
In which reactions is the AS rxn positive CIO(g) + O2(g) - CI(g) + 2O2(8) RXN 01 203(g) 302(8) RXN 02 2 NO2(8) N204(8) RXN 03 RXN 02 only RXN 01 and RXN 02 RXN 01 only All three of the reactions None of the reactions RXN03 only RXN 02 and RXN 03 ORXN 01 and RXN03 - You have a process that is: Endothermic, Entropy decreases. Choose the best answer: O always non-spontaneous O spontaneous at high temperatures O...
part 1 part 2 A mixture of 0.03771 mol of H70, 0.02921 mol of CH 0.05732...
part 1
part 2
A mixture of 0.03771 mol of H70, 0.02921 mol of CH 0.05732 mol of Co, and 0.05598 mol of Hy is placed in a 10-L steel pressure vessel at 1447 K. The following sulibrium is established: 1 H2O(g) + 1 CH(9) = 100) + 3H2(9) At equilibrium 0.01158 mol of CH is found in the reaction mixture (a) Calculate the equilibrium partial pressures of H20, Che, Co, and a Peg(H₂O) Pea(CH) = Pes(CO) - Peg(H₂) (b)...
Please help with 1, 2, 3, 4 & 5 1. 2. 3. 4. 5. Classify the...
Please help with 1, 2, 3, 4 & 5
1.
2.
3.
4.
5.
Classify the following compounds as weak acids (W) or strong acids (S): hypochlorous acid perchloric acid chloric acid WSS OSSS Sww Owww OWs W A 25.0 mL sample of 0.723 M HClO 4 is titrated with a 0.273 M KOH solution. The H 30 concentration after the addition of 10.0 mL of KOH is М. O 0.440 O 1.00 x 10-7 0.723 O 2.81 x 10-13...
question 2 and 3 could be answer is a complete question Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following stateme...
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
4. At a certain temperature, the reaction: 2NO(g) + Bra(e) 2NOBr(g), has k, = 3.20 x...
4. At a certain temperature, the reaction: 2NO(g) + Bra(e) 2NOBr(g), has k, = 3.20 x 10-2 If the partial pressures of NO and Bry at equilibrium are 3.70 atm and 1.85 atm, respectively, what is the partial pressure of NOBr at equilibrium? (A) 0.219 atm (B) 0.810 atm (C) 0.900 atm (D) 28.1 atm 5. For the reaction: N2(g) + 3H2(g) + 2NH3(g), K = 0.062 at 523 K. What is the value of the equilibrium constant Ko at...
*** ** -305.01 -183.9 151.1 NH4NO3 (aq) -339.9 -190.6 259.8 AHºf (kJ/mol) AG°f (kJ/mol) Sº (/mol...
*** ** -305.01 -183.9 151.1 NH4NO3 (aq) -339.9 -190.6 259.8 AHºf (kJ/mol) AG°f (kJ/mol) Sº (/mol K) 0 205.1 Oxygen 02 (g) O(g) 03 (g) 249.2 231.7 161.1 142.7 163.2 238.9 Phosphorus AH° (kJ/mol) AG°f(kJ/mol) sº (/mol K) Nitrogen AH°(kJ/mol) AG°f(kJ/mol) s° /mol K) N2 (8) 0 191.6 N (g) 472.7 455.6 153.3 NH3 (g) -46.1 -16.5 192.5 NH3 (aq) -80.0 -27.0 111.0 132.0 -79.0 113.0 90.3 86.6 210.8 51.7 66.1 261.8 NH4+ (aq) NO (g) NOCI (9) NO2 (g)...
IF ÄH and ÄS are both negative for a reaction, then the reaction is: a. nonspontaneous at low temperatures and spontaneous at high temperatures. b. spontaneous at low temperatures and nonspontaneous at high temperatures. C. spontaneous at all temperatures. d. nonspontaneous at all temperatures. e. none of the choices given above Suppose that AH° = +95.1 kJ and AS° =-0.192 kJ/K for a chemical reaction. What is AG at 600 K? a. +20.1 kJ b.-20.1 kJ c. +152.3k) d.+210.3 kJ...
QUESTION 3 Which of the following statements is true regarding a buffer system of HF acid and its salt, NaF? The HF neutralizes the added acid. The HF neutralizes the added base. The NaF neutralizes the added H20. The HF is not a necessary component.
For the reaction N2(g) + 3H2(g) = 2 NH3(g), what is AG (in kJ) at 298 K when the pressures of the gases are: P(N2) = .13 atm P(H2) = 6.2 x 10-5 atm P(NH3) = 1.8 atm? +1.73 +47.0 0 -33.0 0-113 0 -2.49
For the reaction N2(g) + 3 H2(g) = 2 NH3(g), what is AG (in kJ) at 298 K when the pressures of the gases are: P(N2) .13 atm P(H2) = 6.2 x 10-5 atm P(NH3) = 1.8 atm? O +47.0 O-113 O-2.49 0 -33.0 O +1.73
In which reactions is the AS rxn positive CIO(g) + O2(g) - CI(g) + 2O2(8) RXN 01 203(g) 302(8) RXN 02 2 NO2(8) N204(8) RXN 03 RXN 02 only RXN 01 and RXN 02 RXN 01 only All three of the reactions None of the reactions RXN03 only RXN 02 and RXN 03 ORXN 01 and RXN03 - You have a process that is: Endothermic, Entropy decreases. Choose the best answer: O always non-spontaneous O spontaneous at high temperatures O...
part 1
part 2
A mixture of 0.03771 mol of H70, 0.02921 mol of CH 0.05732 mol of Co, and 0.05598 mol of Hy is placed in a 10-L steel pressure vessel at 1447 K. The following sulibrium is established: 1 H2O(g) + 1 CH(9) = 100) + 3H2(9) At equilibrium 0.01158 mol of CH is found in the reaction mixture (a) Calculate the equilibrium partial pressures of H20, Che, Co, and a Peg(H₂O) Pea(CH) = Pes(CO) - Peg(H₂) (b)...
Please help with 1, 2, 3, 4 & 5
1.
2.
3.
4.
5.
Classify the following compounds as weak acids (W) or strong acids (S): hypochlorous acid perchloric acid chloric acid WSS OSSS Sww Owww OWs W A 25.0 mL sample of 0.723 M HClO 4 is titrated with a 0.273 M KOH solution. The H 30 concentration after the addition of 10.0 mL of KOH is М. O 0.440 O 1.00 x 10-7 0.723 O 2.81 x 10-13...
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
4. At a certain temperature, the reaction: 2NO(g) + Bra(e) 2NOBr(g), has k, = 3.20 x 10-2 If the partial pressures of NO and Bry at equilibrium are 3.70 atm and 1.85 atm, respectively, what is the partial pressure of NOBr at equilibrium? (A) 0.219 atm (B) 0.810 atm (C) 0.900 atm (D) 28.1 atm 5. For the reaction: N2(g) + 3H2(g) + 2NH3(g), K = 0.062 at 523 K. What is the value of the equilibrium constant Ko at...
*** ** -305.01 -183.9 151.1 NH4NO3 (aq) -339.9 -190.6 259.8 AHºf (kJ/mol) AG°f (kJ/mol) Sº (/mol K) 0 205.1 Oxygen 02 (g) O(g) 03 (g) 249.2 231.7 161.1 142.7 163.2 238.9 Phosphorus AH° (kJ/mol) AG°f(kJ/mol) sº (/mol K) Nitrogen AH°(kJ/mol) AG°f(kJ/mol) s° /mol K) N2 (8) 0 191.6 N (g) 472.7 455.6 153.3 NH3 (g) -46.1 -16.5 192.5 NH3 (aq) -80.0 -27.0 111.0 132.0 -79.0 113.0 90.3 86.6 210.8 51.7 66.1 261.8 NH4+ (aq) NO (g) NOCI (9) NO2 (g)...
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