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100 mL of water at 25°C and 100 mL of alcohol at 25°C are both heated at the sam

ID: 989435 • Letter: 1

Question

100 mL of water at 25°C and 100 mL of alcohol at 25°C are both heated at the same rate under identical conditions. After 3 minutes the temperature of the alcohol is 50°C. Two minutes later the temperature of the water is 50°C. Which liquid received more heat as it warmed to 50°C?

a) The water.

b) The alcohol.

c) Both received the same amount of heat.

d) It is impossible to tell from the information given.

What is the reason for your answer above?

b) Water has a higher boiling point then the alcohol.

c) Water takes longer to change its temperature than the alcohol.

d) Both increased their temperatures 25°C.

e) Alcohol has a lower density and vapor pressure.

f) Alcohol has a higher specific heat so it heats faster.

Explanation / Answer

(a) Water receives more heat. because its specific heat capacity is higher than alcohol so it needs more amount of energy to raise its temperature by 1 degree C.

Reason:

(c) Since water takes longer to change its tempearture than the alcohol

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