The enthalpy for the following reaction is 136 kJ. If the reaction takes place in a...
The enthalpy for the following reaction is 136 kJ.
If the reaction takes place in a closed container, which one of the following reaction conditions will not decrease the concentration of water vapor?
2 NaHCO3(s) ⇌ Na2CO3(s) + CO2(g) + H2O(g)
A.) cool the container
B.) remove CO2
C.) decrease the volume of the container
D.)add some NaHCO3
Homework Answers
Answer is (B)
Removal of CO2 shift the Equilibrium in forward direction to compensate the change.
As a result more water will be produced.
- Decreasing volume shift the Equilibrium to the side where lesser number of moles present.
- In Endothermic reaction Equilibrium constant shift left on decreasing temperature.
- Addition of sodium bicarbonate shift Equilibrium left.
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The enthalpy for the following reaction is 136 kJ.
If the reaction takes place in a...
L. 35. none of these choices is CUITCCL The following reaction is at equilibrium at a...
L. 35. none of these choices is CUITCCL The following reaction is at equilibrium at a pressure of l atm, in a closed container. NaOH(s) + CO2(g) + NaHCO3(s): AHºrn <0 Which, if any, of the following actions will decrease the concentration of CO2 gas present at equilibrium? adding N2 gas to double the pressure adding more solid NaOH increasing the volume of the container lowering the temperature none of these choices is correct B.
Hence, the reaction enthalpy for the overall reaction is-297 kJ + (-99 kJ) = -396 kJ....
Hence, the reaction enthalpy for the overall reaction is-297 kJ + (-99 kJ) = -396 kJ. Part C Hess's Law of Constant Heat Summation button within the activity and use the example shown to calculate the reaction enthalpy, AH CH, (g)+202 (g)-CO2 (g ) + 2H,O(1) Use the series of reactions that follow: Click on the for the following reaction: 1. C(s)+2H2 (g)->CH, (g). AH= -74.8 kJ. C)+O2 g)-CO2(g), AH= -393.5 kJ. 3. 2H2 (g) +O2(g) -+2H,6(g), AH-484.0 kJ 4....
Part A) What is ΔH∘rxn for the following chemical reaction? CO2(g)+2KOH(s)→H2O(g)+K2CO3(s) You can use the following...
Part A) What is ΔH∘rxn for the following chemical reaction? CO2(g)+2KOH(s)→H2O(g)+K2CO3(s) You can use the following table of standard heats of formation (ΔH∘f) to calculate the enthalpy of the given reaction. Element/ Compound Standard Heat of Formation (kJ/mol) Element/ Compound Standard Heat of Formation (kJ/mol) H(g) 218 N(g) 473 H2(g) 0 O2(g) 0 KOH(s) −424.7 O(g) 249 CO2(g) −393.5 K2CO3(s) −1150kJ C(g) 71 H2O(g) −241.8kJ C(s) 0 HNO3(aq) −206.6 Express the standard enthalpy of reaction to three significant figures and...
The following table lists some enthalpy of formation values for selected substances. Substance ΔfH∘ΔfH∘ (kJ mol−1)(kJ...
The following table lists some enthalpy of formation values for selected substances. Substance ΔfH∘ΔfH∘ (kJ mol−1)(kJ mol−1) CO2(g)CO2(g) −393.5−393.5 Ca(OH)2(s)Ca(OH)2(s) −986.1−986.1 H2O(l)H2O(l) −285.8−285.8 CaCO3(s)CaCO3(s) −1207−1207 H2O(g)H2O(g) −241.8−241.8 Part A: Determine the enthalpy for this reaction: Ca(OH)2(s)+CO2(g)→CaCO3(s)+H2O(l) C a ( O H ) 2 ( s ) + C O 2 ( g ) → C a C O 3 ( s ) + H 2 O ( l ) Express your answer in kJ mol−1 k J m o l...
Which is the correct equilibrium constant expression for the following reaction? 2 NaHCO3(s) Na2CO3(s) + CO2(g)...
Which is the correct equilibrium constant expression for the following reaction? 2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) O A. Kc=[Na2CO3] / [NaHCO3)2 O B. Kc = [NaHCO3] 2 / [Na2CO3][ CO2][ H20] O C. Kc = [ CO2][ H20] OD. Kc = [Na2CO3][ CO2][ H20] / [NaHCO3)2
Which is the correct equilibrium constant expression for the following reaction? 2 NaHCO3(s) +- Na2CO3(s) +...
Which is the correct equilibrium constant expression for the following reaction? 2 NaHCO3(s) +- Na2CO3(s) + CO2(g) + H2O(g) O A. Kc = [Na2CO3]/[NaHCO3)2 O B. Kc = [NaHCO3]2/[Na2CO3][ CO2][ H20] OC. Kc = [CO2][ H20]
A.A scientist measures the standard enthalpy change for the following reaction to be -2932.6 kJ :...
A.A scientist measures the standard enthalpy change for the
following reaction to be -2932.6 kJ :
2C2H6(g)
+ 7 O2(g)4CO2(g)
+ 6 H2O(g)
Based on this value and the standard enthalpies of formation for
the other substances, the standard enthalpy of formation of
CO2(g) is kJ/mol.
B.A scientist measures the standard enthalpy change for the
following reaction to be -138.9 kJ :
H2(g) +
C2H4(g)C2H6(g)
Based on this value and the standard enthalpies of formation for
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Part A Determine the enthalpy for this reaction: Ca(OH)2(s)+CO2(g)→CaCO3(s)+H2O(l) Express your answer in kilojoules...
Part A Determine the enthalpy for this reaction: Ca(OH)2(s)+CO2(g)→CaCO3(s)+H2O(l) Express your answer in kilojoules per mole to one decimal place. ΔHrxn∘= kJ/mol Part B Consider the reaction Ca(OH)2(s)→CaO(s)+H2O(l) with enthalpy of reaction ΔHrxn∘=65.2kJ/mol What is the enthalpy of formation of CaO(s)? Express your answer in kilojoules per mole to one decimal place. ± Enthalpy Enthalpy H is a measure of the energy content of a system at constant pressure. Chemical reactions involve changes in enthalpy, ΔH, which can be measured...
A scientist measures the standard enthalpy change for the following reaction to be 2752.8 kJ : 6CO2(g) + 6H2O(1)...
A scientist measures the standard enthalpy change for the following reaction to be 2752.8 kJ : 6CO2(g) + 6H2O(1) C6H12O6 + 6 O2(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CH1:05 is kJ/mol A scientist measures the standard enthalpy change for the following reaction to be 53.9 LJ: CO2(g) + H2(g)— CO(g) + H2O() Based on this value and the standard enthalpies of formation for the other...
Sucrose, C12H22011, is table sugar, and it has a (enthalpy of reaction) AH. of –5639.7 kJ/mol....
Sucrose, C12H22011, is table sugar, and it has a (enthalpy of reaction) AH. of –5639.7 kJ/mol. Determine the AH; of sucrose given AH+ (H2O(1)) = -285.8 kJ/mol, and AH+ (CO2(g)) = -393.5 kJ/mol. [3] C12H22O4(s) + 12 O2(g) → 12 CO2(g) + 11 H2O(1)
L. 35. none of these choices is CUITCCL The following reaction is at equilibrium at a pressure of l atm, in a closed container. NaOH(s) + CO2(g) + NaHCO3(s): AHºrn <0 Which, if any, of the following actions will decrease the concentration of CO2 gas present at equilibrium? adding N2 gas to double the pressure adding more solid NaOH increasing the volume of the container lowering the temperature none of these choices is correct B.
Hence, the reaction enthalpy for the overall reaction is-297 kJ + (-99 kJ) = -396 kJ. Part C Hess's Law of Constant Heat Summation button within the activity and use the example shown to calculate the reaction enthalpy, AH CH, (g)+202 (g)-CO2 (g ) + 2H,O(1) Use the series of reactions that follow: Click on the for the following reaction: 1. C(s)+2H2 (g)->CH, (g). AH= -74.8 kJ. C)+O2 g)-CO2(g), AH= -393.5 kJ. 3. 2H2 (g) +O2(g) -+2H,6(g), AH-484.0 kJ 4....
Which is the correct equilibrium constant expression for the following reaction? 2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) O A. Kc=[Na2CO3] / [NaHCO3)2 O B. Kc = [NaHCO3] 2 / [Na2CO3][ CO2][ H20] O C. Kc = [ CO2][ H20] OD. Kc = [Na2CO3][ CO2][ H20] / [NaHCO3)2
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A scientist measures the standard enthalpy change for the following reaction to be 2752.8 kJ : 6CO2(g) + 6H2O(1) C6H12O6 + 6 O2(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CH1:05 is kJ/mol A scientist measures the standard enthalpy change for the following reaction to be 53.9 LJ: CO2(g) + H2(g)— CO(g) + H2O() Based on this value and the standard enthalpies of formation for the other...
Sucrose, C12H22011, is table sugar, and it has a (enthalpy of reaction) AH. of –5639.7 kJ/mol. Determine the AH; of sucrose given AH+ (H2O(1)) = -285.8 kJ/mol, and AH+ (CO2(g)) = -393.5 kJ/mol. [3] C12H22O4(s) + 12 O2(g) → 12 CO2(g) + 11 H2O(1)
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