Question

Energy, Hept, and Work 621 > Review Constants Periodic Table Energy cannot be created nor destroyed, but it can be transferre
0 0
Add a comment Improve this question Transcribed image text
Answer #1

Step(1) Given condition, at constant pressure

(∆H°)p = q = -75.0kJ

Step (2) calculation for work done in the reaction.

w = -P∆V = -P(V2-V​​​​1)

Given Value

P = 43.0atm

V​​​​​​2 = final volume = 2.0L

V​​​​​​1 = initial volume = 5.0L

So,

w = -(43.0atm)(2.0L - 5.0L)

w = -43.0atm(3.0L)

w = 129.0atm-L

(note :- 1atm -L = 101.325J)

so,

w = (129.0×101.325J)

w = 13070.925J

(because 1000j = 1kJ)

w = 13.07kJ

Step (3) Calculation for change in international energy.

∆E = q +w

∆E = -75.0kJ + 13.07kJ

∆E = -61.9KJ

( ∆E = negative value)

Add a comment
Know the answer?
Add Answer to:
Energy, Hept, and Work 621 > Review Constants Periodic Table Energy cannot be created nor destroyed, but it can...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Review Constants Perio A temperature increase for the surroundings mo the reactions released heat energy t...

    Review Constants Perio A temperature increase for the surroundings mo the reactions released heat energy t s negative for the system. I the surroundings gain heat energy, then the syste You may want to review int Determine Part B Amole of Teacts at a constant pressure of 43.0 atm via the reaction X(g) + 4Y()+22(g), AH = -75.0 kJ Before the reaction, the volume of the gaseous mixture was 5.00 L. After the reaction, the volume was 200 L Calculate...

  • < 9 of 13 Review Constants Periodic Table Part A A calorimeter contains 28.0 mL of...

    < 9 of 13 Review Constants Periodic Table Part A A calorimeter contains 28.0 mL of water at 11.0 °C. When 250 g of X (a substance with a molar mass of 60.0 g/mol) is added, it dissolves via the reaction X(s) + H2O(1) X(aq) and the temperature of the solution increases to 30.0 °C. Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that...

  • <HW CH 5B Coffee Cup Calorimetry < 1 of 7 > Review Constants Periodic Table Calorimetry...

    <HW CH 5B Coffee Cup Calorimetry < 1 of 7 > Review Constants Periodic Table Calorimetry is a method used to measure enthalpy, or heat, changes that occur during chemical processes. Two common calorimeters are constant- pressure calorimeters and constant volume (or "bomb") calorimeters. Part A A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 186 g of solution. The reaction caused the temperature of the...

  • Review Constants Periodic Table Chemical energy is released or absorbed from reactions in various forms. The...

    Review Constants Periodic Table Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: Part A Calculate the standard enthalpy change for the reaction AH;xn = npAH (products) - RAH; (reactants) 2A+B=2C+ 2D where r represents the stoichiometric coefficients. Use the following data: AH...

  • < 9 of 13 Review Constants Periodic Table Part A A calorimeter contains 28.0 mL of...

    < 9 of 13 Review Constants Periodic Table Part A A calorimeter contains 28.0 mL of water at 11.0 °C. When 250 g of X (a substance with a molar mass of 60.0 g/mol) is added, it dissolves via the reaction X(s) + H2O(1) X(aq) and the temperature of the solution increases to 30.0 °C. Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that...

  • Review | Constants Periodic Table Part A Calorimetry is a method used to measure changes in...

    Review | Constants Periodic Table Part A Calorimetry is a method used to measure changes in enthalpy, or heat, that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant volume or "bomb") calorimeters. Bomb calorimeters are used to measure combustion and other gas- producing reactions, in which the reaction is observed in a strong, sealed vessel. A simple constant-pressure calorimeter can be made from a foam coffee cup and a thermometer, in which energy changes in a...

  • Item 29 29 of 32 Review | Constants Periodic Table Calculate the change in Gibbs free energy for each of the...

    Item 29 29 of 32 Review | Constants Periodic Table Calculate the change in Gibbs free energy for each of the sets of AH AS and T given in the following problems. Submit Request Answer Predict whether or not the reaction in part will be spontaneous at the temperature indicated. (Assume that all reactants and products are in their standard States.) spontaneous nonspontaneous Submit Part H Predict whether or not the reaction in part and products are in their standard...

  • mermer Chapter 22 of 23 Item 22 Review Constants Periodic - Part A 2HCl(s), AH -184.6...

    mermer Chapter 22 of 23 Item 22 Review Constants Periodic - Part A 2HCl(s), AH -184.6 kJmolAssume ideal gas behavior on to the reaction system at constant V and how will the degree of dissociation of HCl(g) change? The reaction is H() + Cu() Match the terms in the left column to the appropriate blanks in the sentences on the right Reset Help decreases The equilibrium constant As Ch(s) is added to the reaction system at constant volume, its partial...

  • Item 29 29 of 32 Review Constants Periodic Table Calculate the change in Gibbs free energy...

    Item 29 29 of 32 Review Constants Periodic Table Calculate the change in Gibbs free energy for each of the sets of AN A S , and T given in the following problems Predict whether or not the reaction in part A wil be spontaneous at the femperature indicated. (Assume that all reactants and products are in their standard states) spontaneous nonspontaneous Submit Part F Predict whether or not the reaction in part B will and products are in their...

  • M Review Constants | Periodic Table Part A Calorimetry is a method used to measure changes...

    M Review Constants | Periodic Table Part A Calorimetry is a method used to measure changes in enthalpy, or heat, that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters. Bomb calorimeters are used to measure combustion and other gas-producing reactions, in which the reaction is observed in a strong, sealed vessel. A simple constant-pressure calorimeter can be made from a foam coffee cup and a thermometer, in which energy changes in a reaction...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
Active Questions
ADVERTISEMENT