3 years ago

How does the absorption and release of energy affect temperature change during a chemical reaction?

1 answer:

6 0

If heat is absorbed, the temperature increases. 

 If heat is released, the temperature decreases.

Hope I helped. :)

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Oxana [17]

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amid [387]

Answer: The freezing point of a 0.765 m solution of nitrobenzene in naphthalene is $74.6^0C$

Explanation:

Depression in freezing point is given by:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f=T_f^0-T_f=(80.3-T_f)^0C$ = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte such as nitrobenzene)

$K_f$ = freezing point constant = $7.45^0C/m$

m= molality = 0.765

$(80.3-T_f)^0C=1\times 7.45\times 0.765$

$T_f=74.6^0C$

Thus the freezing point of a 0.765 m solution of nitrobenzene in naphthalene is $74.6^0C$

7 0

3 years ago