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How much heat is given off when 1 kg of ethyl alcohol in gaseous state at 351 K condenses and cools to 30 °C.
(Specific heat of ethyl alcohol= 2,450 J/kg°C)


Sagot :

Answer:

1,632,550

Explanation:

Now, we can calculate the total heat released:

1. Heat released during condensation:

Q_{condensation} = 1 kg x 841000 J/kg= 841000 J

2. Heat released during cooling:

T = 351 K- 30°C= 321 K

Q{cooling} = 1 kg x 2450 J/kg°C x 321 K =791,550 J

Therefore, the total heat released when 1 kg of ethyl alcohol in the gaseous state at 351 K condenses and cools to 30 °C is:

Q = 841000 J + 791550 J = 1,632,550 J

So, 1,632,550 Joules of heat is given off during this process.