Home / Aptitude Tests / Chemistry / 0.46g of ethanol whe...
0.46g of ethanol when burned raised the temperature of 50g o...

0.46g of ethanol when burned raised the temperature of 50g of water by 14.3K. Calculate the heat of combustion of ethanol.
[C = 12, O = 16, H = 1, Specific heat capacity of water = 4.2 jg-1K-1]

A.

+3000 KJ mol-1

B.

+300 KJ mol-1

C.

-300 KJ mol-1

D.

-3000 KJ mol-1

View answer & explanation

Correct answer is C

Heat, = -M C Q
= -50 * 4.2 * 14.3
= -300 KJ mol-1

See all Chemistry questions & answers
See more JAMB questions & answers
Similar Questions

When a sample of water was boiled, it lathered more readily with soap. it can be concluded that the ...

Pure water can be made to boil at a temperature lower than 100°C by ...

Which of the following alkanes has a straight-chain structure? ...

Select the right answer from the structure above.Which of the following compounds represents the pol...

Which of the following is not an alkali? ...

The colour of phenolphthalein indicator in alkaline solution at the end-point of an acid-base titrat...

Equal masses of calcium trioxocarbonate(iv) were added to dilute hydrochloric acid at the temperatur...

In the periodic table all elements within the same group have the same ...

Sodium reacts vigorously with water to produce ...

During the electrolysis of dilute tetraoxosulphate (VI) acid solution 0.05 mole of electrons were pa...

Aptitude Tests

Spatial Reasoning Questions and Answers

Situational Judgement Questions and Answers

Puzzles Questions and Answers

Typing Speed and Accuracy Test

Nigeria General Knowledge Questions and Answers

Verbal Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Personality Test

Data Interpretation Questions and Answers

Logical Reasoning Questions and Answers

Abstract Reasoning Questions and Answers

Quantitative Reasoning Questions and Answers

Microsoft Office Questions and Answers

See all →


View latest jobs in Nigeria today