Question

When 1.034g of naphthalene (C10H8) is burned in a constant-volume bomb calorimeter at 298K, 41.56 kJ of heat is evolved....

When 1.034g of naphthalene (C10H8) is burned in a constant-volume bomb calorimeter at 298K, 41.56 kJ of heat is evolved. Calculate the change in U and w for the reaction on a molar basis.

1 0
Add a comment Improve this question Transcribed image text
Answer #1

Here is the solution of your question. If you have any doubt or need any clarification please comment in comment box and will definitely resolve your query. If you find useful please upvote it. Thanks in advance.

moles of naph thelere = mass 31.034 fm -0.0081mol molarmass Reaction 128 gra/mal - Co to +1202 → locoz + 4H₂O Given q = 41.56

W=0 (zero) as volume is constant

Add a comment
Know the answer?
Add Answer to:
When 1.034g of naphthalene (C10H8) is burned in a constant-volume bomb calorimeter at 298K, 41.56 kJ of heat is evolved....
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
  • When 120 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter the temperature rose by 3.05 K

    E2C.4(a) When 120 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter the temperature rose by 3.05 K. Calculate the calorimeter constant. By how much will the temperature rise when 150 mg of phenol, C6H5OH(s), is burned in the calorimeter under the same conditions?E2C.8(a) Estimate ΔrHΘ (500 K) for the reaction C(graphite) + O2(g) → CO2(g) from the listed value of the standard enthalpy of formation of CO2(g) at 298 K in conjunction with the data on the temperature-dependence...

  • Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.025 g of naphthalene is burned...

    Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.025 g of naphthalene is burned in a bomb calorimeter, the temperature rises from 24.25 ∘C to 32.33 ∘C. Find ΔErxn for the combustion of naphthalene. The heat capacity of the calorimeter, determined in a separate experiment, is 5.11kJ/∘C. Express the change in energy in kilojoules per mole to three significant figures.

  • Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8) . When 1.025 g of naphthalene is burned in a bo...

    Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8) . When 1.025 g of naphthalene is burned in a bomb calorimeter, the temperature rises from 24.25 ∘C to 32.33 ∘C . Find ΔErxn for the combustion of naphthalene. The heat capacity of the calorimeter, determined in separate experiment, is 5.11kJ/∘C .         ΔErxn =

  • The heat capacity of a bomb (constant volume) calorimeter is found to be 7.45 kJ °C1...

    The heat capacity of a bomb (constant volume) calorimeter is found to be 7.45 kJ °C1 When a 1.652g sample of sulfur is burned in the calorimeter, the temperature of the calorimeter increases from 23.19°C to 28.63°C. Calculate the ΔΗχη for the following reaction from these data: S(s) + O2(g) SO2(g).

  • 5) Naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter. When...

    5) Naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter. When 0.8210 g of naphthalene was burned in a calorimeter containing 1,000. g of water, a temperature rise of 4.21°C was observed. The heat capacity of the bomb calorimeter excluding the water is 3.64 kJ/°C. What is the heat of combustion of naphthalene in kJ/g? (5 pts)

  • A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fue...

    A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.3320 g sample of naphthalene (C10Hg) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.092x103 g of water. During the combustion the temperature increases from 22.54 to 25.04 °C. The heat capacity of water is 4.184 Jg=1°C-1 The heat capacity of the calorimeter was determined...

  • A quantity of 1.922 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently,...

    A quantity of 1.922 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently, the temperature rose by 5.52°C. If the heat capacity of the bomb plus water was 8.75 kJ / °C, calculate the molar heat of combustion of methanol.

  • A 1.720 g sample of naphthalene (formula C10H8) reacts completely in a bomb calorimeter containing 500...

    A 1.720 g sample of naphthalene (formula C10H8) reacts completely in a bomb calorimeter containing 500 g of water. The temperature of the water and the bomb calorimeter increased from 24.00 degrees C to 47.57 degrees C. The heat capacity of the empty calorimeter is 850.0 J/degrees C. The specific heat capacity of water is 4.18 J/g(degrees C). Determine the enthalpy of combustion of naphthalene in units of kJ/mol.

  • Ignition wires heat sample Thermometer Stirrer A bomb calorimeter, or constant volume calorimeter...

    Ignition wires heat sample Thermometer Stirrer A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter This is known as calibrating the calorimeter In the laboratory a student burns a 0.319-g sample of phenanthrene (C14H10 in a bomb calorimeter containing 1070. g of water....

  • Thermometer Ignition wires heat sample Stirrer A bomb calorimeter, or a constant volume calorimeter, is a...

    Thermometer Ignition wires heat sample Stirrer A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Water In an experiment, a 0.3916 g sample of phenanthrene (C14H10) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.266x10 g of water. During the combustion the temperature increases from 23.47 to 26.10 °C. The heat capacity of water is 4.184 J gloc-1....

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
ADVERTISEMENT