rosepotato789
07.12.2019 •
Physics
Calculate the total quantity of heat required to convert 25.0 g of liquid ccl₄(l) from 25.0°c to gaseous ccl₄ at 76.8°c (the normal boiling point for ccl₄)? the specific heat of ccl₄(l) is its heat of fusion is and its heat of vaporization is
a. 0.896 kj
b. 1.43 kj
c. 5.74 kj
d. 6.28 kj.
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Ответ:
d. 6.28 kJ.
Explanation:
step by step explanation
Q=Q1+Q2
Q=mc(t1-t0) + mlv
Q=total heat generated
Q1=quantity of heat required to raise 25.0°C to 76.8°C to liquid state
Q2= quantity of heat required to convert ccl at 76.8°C to its gaseous state
M=mass of ccl4
C=specific heat capacity of ccl4(0.866j/gk)
T1=final temperature 76.8°C
T0=initial temperature 25.0 °C
LV=latent heat of vapourization (1.959 *10^2j/g)
Q=25*0.866 *(76.8-25) +25*1.959*10^2
Q=6.28kj
Ответ:
I think it might be c.
Explanation:
Hope it's right :3