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DedPeter [7]
3 years ago
6

Why does Hess's law allow you to determine the enthalpy change of a reaction?

Chemistry
1 answer:
lana [24]3 years ago
5 0

Enthalpy is a state function

Explanation:

The Hess's law allows us to determine the enthalpy change of a reaction because enthalpy is a state function. It does not depend on the individual path take in going from reactants to products in the reaction.

  • Enthalpy changes are the heat changes accompanying physical and chemical changes.
  • It is the difference between the heat content of product in the final state and the reactants.
  • Enthalpy changes for some reactions are not easily measurable experimentally.
  • To calculate such heat changes, we apply the Hess's law of heat summation.
  • The law states that "the heat change of a reaction is the same whether it occurs in a step or several steps".
  • The Hess's law is simply based on the first law of thermodynamics by which we know that energy is conserved in every system.

learn more:

Hess's law brainly.com/question/11293201

#learnwithBrainly

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How many grams are in 102 moles of magnesium?
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You add 168.90 grams of NaCl to a container and then you add 616.00 grams of water to that same container What is the weight per
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Answer:

The weight percent of NaCl in the container​ is 21.5%

Explanation:

Given that,

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Using formula of percentage of weight

weight\ \%\  of\ component\ of\ the\ solution =\dfrac{weight\ of\ the\ component\ in\ the\ solution}{total\ weight\ of\ the\ solution}\times100

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