Homework Answers
If delta S is positive for the reaction, then randomness in the molecule increases. This also indicates that number of molecules of product is more than that of starting material
In above example, equation A, C, and equation E both have same moles of starting material and product.
Equation B has number of molecules of starting material more than product.
Equation D has more number of molecules of product than that of starting material.
Therefore, equation D will have positive delta S
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-2. Indicate which one of the following reactions results in a positive ASsys. a. AgNO3(aq) +...
Indicate which one of the following reactions results in a positive ?Ssys. a. AgNO3(aq) + NaCl(aq)...
Indicate which one of the following reactions results in a positive ?Ssys. a. AgNO3(aq) + NaCl(aq) <-->AgCl(s) + NaNO3(aq) b. HCl(g) + H2O(l) <--> HCl(aq) c. H2(g) + I2(g) <--> 2 HI(g) d. C2H2O2(g) <--> 2 CO(g) + H2(g) e. H2O(g) <--> H2O(aq) The answer is D. Can someone please explain why? and how the answer was determined?
Indicate which one of the following reactions results in a positive DSsys. AgNO3(aq) + NaCl(aq) —...
Indicate which one of the following reactions results in a positive DSsys. AgNO3(aq) + NaCl(aq) — 7 AgCl(s) + NaNO3(aq) C2H2O2(g) + 2 CO(g) + H2(g) H2O(g) + H20(1) H2(g) +12(g) D - HI(g) HCI(g) + H2O(1) + HCl(aq)
4. Indicate which of the following reactions results in a positive AS. a. Ba(NO3)2(aq) + Na...
4. Indicate which of the following reactions results in a positive AS. a. Ba(NO3)2(aq) + Na So. (aq) = BaSO (s) + 2 NaNO,(aq) b. 4 Fe(s) +3 0,(g) = 2 Fe 0,(s) c. 2 Hg) +0,(g)52 H0g) d. Zn(s) + 2 HCl(aq) = ZnCl(aq) +H. (g) e. 2 Na(s)+Cl2(g) = NaCl(s)
For the reactions below, which reactions have negative entropy? 1. AgNO3(aq) + NaCl(aq) --> AgCl(s) +...
For the reactions below, which reactions have negative entropy? 1. AgNO3(aq) + NaCl(aq) --> AgCl(s) + NaNO3(aq) 2. H2O(g) + CO2(8) --> H2CO3(aq) 3. H2(g) +12(8) --> 2 HI(g) 4. C2H2O2(g) --> 2 CO(g) + H2(g) 5. H2O(g) --> H2O(1) O 2, 3, 4 1, 2,5 1,4,5 0 2,4
Identify which of the following reactions are redox reactions. 1st attempt Choose one or more: O...
Identify which of the following reactions are redox reactions. 1st attempt Choose one or more: O NaHCO3(aq) + HI(aq) → Nal(aq) +H20(1) + CO2(8) O 3H2(g) + N2(g) → 2NH3(g) C6H12(s) +902(g) + 6H20(g) +6C02 (8) o NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)
61. Indicate which one of the following reactions most certainly results in a negative AS sys....
61. Indicate which one of the following reactions most certainly results in a negative AS sys. a. H2O(g) SH,0(s) b. CaCO, (s)s CaO(s) + CO,(g) c. Cuso -5H, O(s) 5 CuSO, (s) +5H 0(g) d. 140,(g) + 3NH, NO, (s) + CH22(1)→ 3N, (g) +17H2O(g) +10C02 (8) e. CO, (aq) SCO (8)
2. When solutions of AgNO3 and NaCl react, the balanced molecular equation is: AgNO3(aq) + NaCl(aq)...
2. When solutions of AgNO3 and NaCl react, the balanced molecular equation is: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) How much AgCl is produced when 3.10 g of AgNO3 reacts with excess NaCl? a. 1.55 g b. 2.62 c. 4.17 g d. 6.20 g 1. Given the reaction 2 HgO(s) → 2 Hg(1) + O2(g). What weight of elemental mercury will be obtained by the decomposition of 94.5 g of HgO? a. 43.8 g b. 78.5 g c. 87.5...
write net ionic equations for the following reactions: Part A 2 AgNO3(aq) +CaCl2(aq) + 2 AgCl(s)...
write net ionic equations for the following reactions:
Part A 2 AgNO3(aq) +CaCl2(aq) + 2 AgCl(s) + Ca(NO3)2 (aq) Express your answer as a chemical equation. Identify all of the phases in your answer. = A * O 2 ? Submit Request Answer Part B Ba(OH)2(aq) + 2 HCl(aq) → BaCl2(aq) + 2 H2O(l) Express your answer as a chemical equation. Identify all of the phases in your answer. AED + O 2 ? Submit Request Answer Part Ca(8) +...
1. Which of the following will have the greatest standard molar entropy (Sº)? a. NH3(g) d....
1. Which of the following will have the greatest standard molar entropy (Sº)? a. NH3(g) d. H:0(1) b. He(g) e. CaCO(s) c. C(s, graphite) 2. Indicate which of the following has the highest entropy at 298 K. a. 0.5 g of HCN b. 1 mol of HCN c. 2 kg of HCN d. 2 mol of HCN e. All of the above have the same entropy at 298 K. EVALUATING AS FOR REACTIONS (non-math recognition) 3. Indicate which one of...
3. The following figures represent distributions of two types of gas molecules between by an open...
3. The following figures represent distributions of two types of gas molecules between by an open tube. In which figure is the entropy of the system maximized? e. These are equal entropy systems 4. Indicate which of the following reactions results in a positive ASsys. a. Ba(NO3)2(aq) + Na S0,(aq) = BaSO,($) +2 NaNO3(aq) b. 4 Fe(s) +3 0 () S 2 Fe 0,($) c. 2 H (g) + O2(g) 5 2 H,O(g) d. Zn(s) + 2 HCl(aq) = ZnCl(aq)...
Indicate which one of the following reactions results in a positive DSsys. AgNO3(aq) + NaCl(aq) — 7 AgCl(s) + NaNO3(aq) C2H2O2(g) + 2 CO(g) + H2(g) H2O(g) + H20(1) H2(g) +12(g) D - HI(g) HCI(g) + H2O(1) + HCl(aq)
4. Indicate which of the following reactions results in a positive AS. a. Ba(NO3)2(aq) + Na So. (aq) = BaSO (s) + 2 NaNO,(aq) b. 4 Fe(s) +3 0,(g) = 2 Fe 0,(s) c. 2 Hg) +0,(g)52 H0g) d. Zn(s) + 2 HCl(aq) = ZnCl(aq) +H. (g) e. 2 Na(s)+Cl2(g) = NaCl(s)
For the reactions below, which reactions have negative entropy? 1. AgNO3(aq) + NaCl(aq) --> AgCl(s) + NaNO3(aq) 2. H2O(g) + CO2(8) --> H2CO3(aq) 3. H2(g) +12(8) --> 2 HI(g) 4. C2H2O2(g) --> 2 CO(g) + H2(g) 5. H2O(g) --> H2O(1) O 2, 3, 4 1, 2,5 1,4,5 0 2,4
Identify which of the following reactions are redox reactions. 1st attempt Choose one or more: O NaHCO3(aq) + HI(aq) → Nal(aq) +H20(1) + CO2(8) O 3H2(g) + N2(g) → 2NH3(g) C6H12(s) +902(g) + 6H20(g) +6C02 (8) o NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)
61. Indicate which one of the following reactions most certainly results in a negative AS sys. a. H2O(g) SH,0(s) b. CaCO, (s)s CaO(s) + CO,(g) c. Cuso -5H, O(s) 5 CuSO, (s) +5H 0(g) d. 140,(g) + 3NH, NO, (s) + CH22(1)→ 3N, (g) +17H2O(g) +10C02 (8) e. CO, (aq) SCO (8)
2. When solutions of AgNO3 and NaCl react, the balanced molecular equation is: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) How much AgCl is produced when 3.10 g of AgNO3 reacts with excess NaCl? a. 1.55 g b. 2.62 c. 4.17 g d. 6.20 g 1. Given the reaction 2 HgO(s) → 2 Hg(1) + O2(g). What weight of elemental mercury will be obtained by the decomposition of 94.5 g of HgO? a. 43.8 g b. 78.5 g c. 87.5...
write net ionic equations for the following reactions:
Part A 2 AgNO3(aq) +CaCl2(aq) + 2 AgCl(s) + Ca(NO3)2 (aq) Express your answer as a chemical equation. Identify all of the phases in your answer. = A * O 2 ? Submit Request Answer Part B Ba(OH)2(aq) + 2 HCl(aq) → BaCl2(aq) + 2 H2O(l) Express your answer as a chemical equation. Identify all of the phases in your answer. AED + O 2 ? Submit Request Answer Part Ca(8) +...
1. Which of the following will have the greatest standard molar entropy (Sº)? a. NH3(g) d. H:0(1) b. He(g) e. CaCO(s) c. C(s, graphite) 2. Indicate which of the following has the highest entropy at 298 K. a. 0.5 g of HCN b. 1 mol of HCN c. 2 kg of HCN d. 2 mol of HCN e. All of the above have the same entropy at 298 K. EVALUATING AS FOR REACTIONS (non-math recognition) 3. Indicate which one of...
3. The following figures represent distributions of two types of gas molecules between by an open tube. In which figure is the entropy of the system maximized? e. These are equal entropy systems 4. Indicate which of the following reactions results in a positive ASsys. a. Ba(NO3)2(aq) + Na S0,(aq) = BaSO,($) +2 NaNO3(aq) b. 4 Fe(s) +3 0 () S 2 Fe 0,($) c. 2 H (g) + O2(g) 5 2 H,O(g) d. Zn(s) + 2 HCl(aq) = ZnCl(aq)...
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