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Calorimetry

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Internal Energy	22 mins	0 completed	Learn
Calorimetry	39 mins	0 completed	Learn
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Next SectionThermochemical Equation

Solution: A 100.0-g bar of gold is heated from 25 oC to 50 oC, during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.Based on the data, calculate the specific heat of Au (s).

Problem

A 100.0-g bar of gold is heated from 25 ^oC to 50 ^oC, during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.

Based on the data, calculate the specific heat of Au (s).

Solution

Specific heat of a substance is given by:

$<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>c</mi><mo> </mo><mo>=</mo><mfrac><mrow><mo> </mo><mi>q</mi></mrow><mrow><mi>m</mi><mo>.</mo><mo>∆</mo><mi>T</mi></mrow></mfrac></math>$

We are given the values of m, q and the initial and final temperatures.

Note that

<math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="20px"><mrow><mo>∆</mo><mi mathvariant="normal">T</mi><mo> </mo><mo>=</mo><mo> </mo><msub><mi mathvariant="normal">T</mi><mi>final</mi></msub><mo> </mo><mo>-</mo><mo> </mo><msub><mi mathvariant="normal">T</mi><mi>initial</mi></msub></mrow></mstyle></math>

Also, because heat is being absorbed, the value of q will be positive.

We can plug in these values into this equation.

View the complete written solution...

Calorimetry

Solution: A 100.0-g bar of gold is heated from 25 oC to 50 oC, during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.Based on the data, calculate the specific heat of Au (s).

Solution: A 100.0-g bar of gold is heated from 25 oC to 50 oC, during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.Based on the data, calculate the specific heat of Au (s).

Problem

Solution

Practice Problems

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