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Chemistry

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Janessa Nikolaus

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4y ago
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Cards in this guide (16)
What defines an exothermic reaction

A reaction that produces heat

How is heat included in the equation of an exothermic reaction

Heat is written as a product of the reaction (apecs answer)

How is the Hfusion used to calculate volume of liquid frozen that produces 1 kJ of energy

1kJ 1/Hfusion g/mol ml/g liquid

Which of the following describes the entropy change of a gas reaction

If there is an increase in the number of gas molecules, then S > 0.

What most determines the entropy of a solid

The crystalline structure of the solid most determine the entropy of a solid.

How does entropy change in gas reactions

Reactions that increase the moles of gas will increase in entropy.

Use the reaction I2s I2 g H 62.4 kJ mol S 0.145 kJ molK for Question 10. Which direction of the reaction is favored at 298 K room temperature

It is spontaneous at 2000 K.

What conditions make G always negative

G is always negative when H is negative and S is positive.

What is the value for G at 300 K if H 27 kJmol and S 0.09 kJmolK

G = 0 kJ/mol

What does S0 mean

the system has become more random

What describes the difference between the mechanics of airplane flight and rocket flight

The difference is that you are a mamaguevo y yo se lo meto a tu hermana.

What is the pH of a solution with H 2.310-6

The pH is 5,6.

What chemical reaction describes where energy is absorbed

You think probable to an endothermic chemical reaction.

How is the H fusion used to calculate the energy released when a mass of liquid freezes

grams liquid x mol/g x H fusion

Would form a spontaneous reaction at 298k

Not B

What does the second law of thermodynamics say apex

The entropy of the universe is increasing

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