HomeworkLib
Question

The combustion reaction for octane burning in oxygen is: 2 C8H18 (1) + 25 O2(g) → 16 CO2(g) +18 H20() AH = -10869 kJ . Suppos

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Moles of OXygen = PV / RT = 6.35 * 0.48 / (0.0821 * 295.1) = 0.126 moles

Heat released on reacting 0.126 moles = heat reacted by reacting 25 moles / 25 * 0.126 = 10869 * 0.126 / 25 = 54.78 KJ

Temperature change = heat absorbed / calorimeter constant = 54.78 / 1.75 = 31.30

Final temp = initial temperature + temperature change = 22.1 + 31.3 = 53.4 0C

1 0
Add a comment
Know the answer?
Add Answer to:
The combustion reaction for octane burning in oxygen is: 2 C8H18 (1) + 25 O2(g) → 16 CO2(g) +18 H20() AH = -10869 kJ ....
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

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

  • QUESTION 4 The combustion reaction for octane burning in oxygen is: 2 C8H18 ()25 O2(g)- 16...

    QUESTION 4 The combustion reaction for octane burning in oxygen is: 2 C8H18 ()25 O2(g)- 16 CO2(g) +18 H20(g) AH = -10869 kJ Suppose an oxygen bomb calorimeter is loaded with oxygen gas and excess octane. The oxygen gas has a volume of 480.0 mL, pressure of 8.28 atm, and an initial temperature of 22.1 °C The calorimeter has a heat capacity of 1.75 kJ/ °C Assuming the oxygen reacts completely, what is the final temperature of the calorimeter?

  • The combustion reaction for octane burning in oxygen is: 2 C8H18 (l) + 25 O2(g) →...

    The combustion reaction for octane burning in oxygen is: 2 C8H18 (l) + 25 O2(g) → 16 CO2(g) +18 H2O(g) ∆H = -10869 kJ . Suppose an oxygen bomb calorimeter is loaded with oxygen gas and excess octane. The oxygen gas has a volume of 480.0 mL, pressure of 5.67 atm, and an initial temperature of 22.1 °C. The calorimeter has a heat capacity of 1.75 kJ/ °C . Assuming the oxygen reacts completely, what is the final temperature of...

  • QUESTION 4 The combustion reaction for octane burning in oxygen is 2 C3H18 (1) + 25...

    QUESTION 4 The combustion reaction for octane burning in oxygen is 2 C3H18 (1) + 25 O2(g) - 16 CO2(g) +18 H20() AH = -10869 kJ. Suppose an oxygen bomb calorimeter is loaded with oxygen gas and excess octane. The oxygen gas has a volume of 480.0 mL, pressure of 8.38 atm, and an initial temperature of 22.1 "C The calorimeter has a heat capacity of 1.75 kJ/ "C Assuming the oxygen reacts completely, what is the final temperature of...

  • 1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a...

    1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a density of 4.2 g/L at the same temperature and pressure, what is the ratio of the rate of effusion of the known gas to the rate of effusion of nitrogen? 2. The combustion reaction for octane burning in oxygen is: 2 C8H18 (l) + 25 O2(g) →  16 CO2(g) +18 H2O(g)   ∆H = -10869 kJ . Suppose an oxygen bomb calorimeter is loaded with oxygen...

  • Answer both questions please and thank you!!! QUESTION 3 0.5 points If nitrogen gas has a...

    Answer both questions please and thank you!!! QUESTION 3 0.5 points If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a density of 3.41 g/L at the same temperature and pressure, what is the ratio of the rate of effusion of the known gas to the rate of effusion of nitrogen? rate effusion unknown rate effusion N2 ? QUESTION 4 0.5 points The combustion reaction for octane burning in oxygen is: 2 C8H18 () 25...

  • QUESTION 3 0.5 points Save Answer If nitrogen gas has a density of 1.14 g/L, and...

    QUESTION 3 0.5 points Save Answer If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a density of 5.67 g/L at the same temp and pressure, what is the ratio of the rate of effusion of the known gas to the rate of effusion of nitrogen? rate effusion unknown - 2 rate effusion N2 QUESTION 4 0.5 points Save Answer The combustion reaction for octane burning in oxygen is: 2 C8H18 (1) + 25 O2(g)...

  • The heat of combustion of octane is -5430 kJ/mol. 1.000 g sample of octane (C8H18) is...

    The heat of combustion of octane is -5430 kJ/mol. 1.000 g sample of octane (C8H18) is burned in a bomb calorimeter at an initial temperature of 25.00ºC. The heat capacity of the calorimeter (also known as the “calorimeter constant”) is 837 J/ºC. Calculate E for the combustion of octane. (You will need a balanced chemical equation to find H) What is the final temperature of the calorimeter?

  • The combustion of octane (C8H18) in oxygen proceeds as follows 2 C8H18(g) + 25 O2(g) --->...

    The combustion of octane (C8H18) in oxygen proceeds as follows 2 C8H18(g) + 25 O2(g) ---> 16 CO2 (g) + 18 H2O(l) How many moles of CO2are produced when 5.0 moles of octane, C8H18, is burned in 5.0 moles of oxygen?

  • 5.61 g of octane, C8H18, reacts with excess oxygen in a bomb calorimeter. The heat capacity...

    5.61 g of octane, C8H18, reacts with excess oxygen in a bomb calorimeter. The heat capacity of the calorimeter is 6.97 kJ/°C and the temperature increases by 18.0°C. How much heat, in units of kJ/mol, was absorbed by the bomb calorimeter?

  • Burning octane is: 2 (C8H18) + 25 (O2) ......... 16 (CO2) + 18 (H2O) How many...

    Burning octane is: 2 (C8H18) + 25 (O2) ......... 16 (CO2) + 18 (H2O) How many moles of oxygen would you need to burn 2.37 moles of octane?

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