Homework Answers
2)
In standard formation reaction is the reaction that forms exactly one mole of a compound from its consitutent elements in their standard states.
Hence, the reaction that represents a standard formation reaction is
C (s) + (1/2) O2 (g)
CO (g) .
3.)
From A to B iron is solid.
B to C temperature is constant , hence
heat is required to melt solid iron.
Melting point is 15000c .
Point C to D , iron is liquid state.
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2 pts) Which of the following reactions represents a standard formation reaction? a. 2C+02 → 2...
Question 6 1 pts Which of the following reactions is a standard formation reaction (i.e. АHræn...
Question 6 1 pts Which of the following reactions is a standard formation reaction (i.e. АHræn = AH) at T = 298 K? O 2 Fe (s) + 1.5 O2() → Fe2O3(s) O N2(1) + 2 O2(1) ► N204(1) O CO(g) + 2H2(g) + CH3OH(1) O C(s, graphite) + H2(g) + O2(g) → C6H1206(s) O Cl2(g) + H2(g) →2 HCl(g) Question 4 1 pts A sample of 1.71 moles of a substance was burned in a constant pressure calorimeter. The...
1) In the reaction of Cl2 with ethane and UV light, which of the following reactions...
1) In the reaction of Cl2 with ethane and UV light, which of the following reactions would be a chain termination event(s)? 1) Cl. + CH3-CH3 CH3-CH2-CI+H. II) CI+ CH3-CH3 CH3-H2C + HCI III) Cl. + CH3-H2C: CH3-CH2-CI IV)Cl2 + CH3-H2C CH3-CH2-CI+ CI: V) Cl2 + UV light - CI+CI- A) reaction V B) reactions I and IV C) reactions III and IV D) reactions I and II E) reaction III 2) Given the chlorination of acetone shown below.choose the...
1) In the reaction of Cl2 with ethane and UV light, which of the following reactions...
1) In the reaction of Cl2 with ethane and UV light, which of the following reactions would be a chain termination event(s)? 1) CI: + CH3-CH3 - CH3-CH2-CI+H II) CI+ CH3-CH3 CH3-H2C + HCI III) Cl. + CH3-H2C-CH3-CH2-CI IV) Cl2 + CH3-H2C - CH3-CH2-CI+CI- V) Cl2 + UV light -CI+CI: A) reaction V B) reactions I and IV C) reactions III and IV D) reactions I and II E) reaction III 2) Given the chlorination of acetone shown below, choose...
Consider the reaction: 2 BsHs (I)12 02 (g) (a) Use the standard enthalpies of formation found...
Consider the reaction: 2 BsHs (I)12 02 (g) (a) Use the standard enthalpies of formation found in Appendix B of the textbook to calculate the enthalpy change of the reaction. The standard enthalpy of formation of BsH, (I) is 73.2 kl/mol. 5 B2Os (s) +9 H2O (I) (b) Predict the sign of the entropy change and provide the two reasons likely to have made the biggest impact on the entropy change (and upon which you based your prediction). (c) Based...
Which of the following equilibria will shift towards the formation of more products if the reaction...
Which of the following equilibria will shift towards the formation of more products if the reaction at equilibrium is compressed into half its volume? 1. 2N2O(g) + 2N2(g) + O2(g) II. 2CO(g) + O2(g) = 2CO2(g) III. N2(g) + O2(g) + 2NO(g) Both II and III. All three reactions will shift towards the formation of more products. Consider the following reaction at equilibrium. CO2(g) + 2 H2O(l) = CH2(g) + 2O2(g) AH° = +890 kJ Which two of the following...
pleaae do all, please please please QUESTION 3 Consider the following half-reactions and their standard reduction...
pleaae do all, please please please
QUESTION 3 Consider the following half-reactions and their standard reduction potentials then give the standard line (cell) notation for a voltaic cell built on these half reactions. Mn2+(aq) + 2 e <-> Mn(s) E = -1.18 V Cr3+ (aq) + 3 e <-> Cris) - 0.41 V A Mn (s) | Mn 2+(aq, 1.0 M) 1 Cr3+(aq. 1.0 M) | Cris) B. Mn (s) Mn 2+(aq, 1.0 M) || Cris) | Cr3+(99, 1.0 M)...
2. The following synthesis reaction of methanol from carbon monoxide (CO) is an important part of...
2. The following synthesis reaction of methanol from carbon monoxide (CO) is an important part of the so-called CI chemistry, CO(g) + 2H, (8) catalya >CH,OH (8) because CO can be obtained from coal and methanol can easily go on to form heavier hydro-carbons and carbonhydrates. (a) Calculate the heat of reaction and equilibrium constant at 150 °C. (b) Determine the equilibrium composition at 150 °C and 5 bar if a feed mixture of CO and Hz in a 1:1...
3) Identify the first mechanistic step in the reaction shown below. H2O OH Lilia ci H-Ö: H-02 4) Rank the following fro...
3) Identify the first mechanistic step in the reaction shown below. H2O OH Lilia ci H-Ö: H-02 4) Rank the following from least reactive to most reactive towards nucleophilic acyl substitution. NH2 ОСН3 III IV a) II <I< IV < III b)I<IV < II < III c) III <IV <I<II d) I< II <IV < III
i need help with everything please!! WWLWUNA HOSILNILNIUSPRING 2020) Chapter #14 The following practice problems from...
i need help with everything please!!
WWLWUNA HOSILNILNIUSPRING 2020) Chapter #14 The following practice problems from Chang's text are not to be submitted. The numbers in brackets refer to problems appearing at the end of the chapter. Equilibrium Constant Expressions (14.8, 14.9) Calculating Equilibrium Constants (14.13 to 14.24: Do as many as you can) Multiple Equilibria (14.29, 14.31) Kinetics and Chemical Equilibrium (14.35, 14.36) Calc. of Equilibrium Conc. (14.39 - 14.48) Do as many as you can. LeChatlier's Principle (14.54,...
10. (5 pts) Consider the following reaction in equilibrium H2(g) + Brz(g) → 2 HBr (g)...
10. (5 pts) Consider the following reaction in equilibrium H2(g) + Brz(g) → 2 HBr (g) AH = + 68 kJ How will each of the following changes affect the equilibrium concentrations of each chemical: a) addition of HBr(g) b) increasing temperature c) increasing pressure d) decreasing volume of the reacting vessel at constant temperature. e) addition of bromine f) addition of argon g) addition of catalyst
Question 6 1 pts Which of the following reactions is a standard formation reaction (i.e. АHræn = AH) at T = 298 K? O 2 Fe (s) + 1.5 O2() → Fe2O3(s) O N2(1) + 2 O2(1) ► N204(1) O CO(g) + 2H2(g) + CH3OH(1) O C(s, graphite) + H2(g) + O2(g) → C6H1206(s) O Cl2(g) + H2(g) →2 HCl(g) Question 4 1 pts A sample of 1.71 moles of a substance was burned in a constant pressure calorimeter. The...
1) In the reaction of Cl2 with ethane and UV light, which of the following reactions would be a chain termination event(s)? 1) Cl. + CH3-CH3 CH3-CH2-CI+H. II) CI+ CH3-CH3 CH3-H2C + HCI III) Cl. + CH3-H2C: CH3-CH2-CI IV)Cl2 + CH3-H2C CH3-CH2-CI+ CI: V) Cl2 + UV light - CI+CI- A) reaction V B) reactions I and IV C) reactions III and IV D) reactions I and II E) reaction III 2) Given the chlorination of acetone shown below.choose the...
1) In the reaction of Cl2 with ethane and UV light, which of the following reactions would be a chain termination event(s)? 1) CI: + CH3-CH3 - CH3-CH2-CI+H II) CI+ CH3-CH3 CH3-H2C + HCI III) Cl. + CH3-H2C-CH3-CH2-CI IV) Cl2 + CH3-H2C - CH3-CH2-CI+CI- V) Cl2 + UV light -CI+CI: A) reaction V B) reactions I and IV C) reactions III and IV D) reactions I and II E) reaction III 2) Given the chlorination of acetone shown below, choose...
Consider the reaction: 2 BsHs (I)12 02 (g) (a) Use the standard enthalpies of formation found in Appendix B of the textbook to calculate the enthalpy change of the reaction. The standard enthalpy of formation of BsH, (I) is 73.2 kl/mol. 5 B2Os (s) +9 H2O (I) (b) Predict the sign of the entropy change and provide the two reasons likely to have made the biggest impact on the entropy change (and upon which you based your prediction). (c) Based...
Which of the following equilibria will shift towards the formation of more products if the reaction at equilibrium is compressed into half its volume? 1. 2N2O(g) + 2N2(g) + O2(g) II. 2CO(g) + O2(g) = 2CO2(g) III. N2(g) + O2(g) + 2NO(g) Both II and III. All three reactions will shift towards the formation of more products. Consider the following reaction at equilibrium. CO2(g) + 2 H2O(l) = CH2(g) + 2O2(g) AH° = +890 kJ Which two of the following...
pleaae do all, please please please
QUESTION 3 Consider the following half-reactions and their standard reduction potentials then give the standard line (cell) notation for a voltaic cell built on these half reactions. Mn2+(aq) + 2 e <-> Mn(s) E = -1.18 V Cr3+ (aq) + 3 e <-> Cris) - 0.41 V A Mn (s) | Mn 2+(aq, 1.0 M) 1 Cr3+(aq. 1.0 M) | Cris) B. Mn (s) Mn 2+(aq, 1.0 M) || Cris) | Cr3+(99, 1.0 M)...
2. The following synthesis reaction of methanol from carbon monoxide (CO) is an important part of the so-called CI chemistry, CO(g) + 2H, (8) catalya >CH,OH (8) because CO can be obtained from coal and methanol can easily go on to form heavier hydro-carbons and carbonhydrates. (a) Calculate the heat of reaction and equilibrium constant at 150 °C. (b) Determine the equilibrium composition at 150 °C and 5 bar if a feed mixture of CO and Hz in a 1:1...
3) Identify the first mechanistic step in the reaction shown below. H2O OH Lilia ci H-Ö: H-02 4) Rank the following from least reactive to most reactive towards nucleophilic acyl substitution. NH2 ОСН3 III IV a) II <I< IV < III b)I<IV < II < III c) III <IV <I<II d) I< II <IV < III
i need help with everything please!!
WWLWUNA HOSILNILNIUSPRING 2020) Chapter #14 The following practice problems from Chang's text are not to be submitted. The numbers in brackets refer to problems appearing at the end of the chapter. Equilibrium Constant Expressions (14.8, 14.9) Calculating Equilibrium Constants (14.13 to 14.24: Do as many as you can) Multiple Equilibria (14.29, 14.31) Kinetics and Chemical Equilibrium (14.35, 14.36) Calc. of Equilibrium Conc. (14.39 - 14.48) Do as many as you can. LeChatlier's Principle (14.54,...
10. (5 pts) Consider the following reaction in equilibrium H2(g) + Brz(g) → 2 HBr (g) AH = + 68 kJ How will each of the following changes affect the equilibrium concentrations of each chemical: a) addition of HBr(g) b) increasing temperature c) increasing pressure d) decreasing volume of the reacting vessel at constant temperature. e) addition of bromine f) addition of argon g) addition of catalyst
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