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3 years ago

Consider the reaction pathway graph below.

Chemistry

1 answer:

san4es73 [151]3 years ago

6 0

Hello!

If the reaction could be made to go faster B. The hill would be shorter.

The "hill" is called Activation Energy. It is the energy of the activated intermediate compound needed to complete the reaction. Catalysts are substances that don't intervene in the reaction which speed up the rate of a given reaction by lowering the Activation Energy giving alternate reaction pathways with lower-energy intermediates. If the reaction could be made to go faster with the use of a catalyst, then the Activation Energy would be lower and the "hill" would be shorter.

Have a nice day!

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Answer: The energy released will be 114.223 kJ.

Explanation:

To calculate the amount of heat released, we use the formula:

$Q= m\times c\times \Delta T$

Q = heat gained or released

m = mass of the substance = 1.3kg = 1300 g (Conversion factor: 1kg = 1000g)

c = heat capacity of water = 4.184 J/g K

$\Delta T={\text{Change in temperature}}=(274-295)K=-21K$

Putting values in above equation, we get:

$Q=1300g\times 4.184J/gK\times (-21)K$

Q = -114223 Joules = -114.223 kJ (Conversion Factor: 1kJ = 1000J)

Negative sign implies heat released.

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3 years ago

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Licemer1 [7]

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4 years ago

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