Help on thermochemical equation question  [ENDORSED]

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Achang1L
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Joined: Wed Sep 21, 2016 2:59 pm

Help on thermochemical equation question

Postby Achang1L » Sat Jan 21, 2017 4:13 pm

When 0.231 g of phosphorus reacts with chlorine to form phosphorus trichloride, PCl3, in a constant-pressure calorimeter of heat capacity 216 J·(?C)?1 , the temperature of the calorimeter rises by 11.06 ?C. Write the thermochemical equation for the reaction.

How do you solve this problem?

Megan Yabumoto 3K
Posts: 42
Joined: Fri Jul 22, 2016 3:00 am

Re: Help on thermochemical equation question  [ENDORSED]

Postby Megan Yabumoto 3K » Sat Jan 21, 2017 5:48 pm

To solve this problem, you would first write out the reaction. Balance P + Cl -> PCl3. The rest of the information is given to determine the molar heat capacity using the equation: n x (Cp) x (change in temperature)


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