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CIVE40010 - Energy and environmental engineering > Energy Wave Function and Chemistry of Air Pollution > Flashcards

Energy Wave Function and Chemistry of Air Pollution Flashcards

1
Q

What is the ideal gas law?

A

PV=nRT

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2
Q

What is an ideal gas?

A

An ideal gas is a theoretical gas composed of a set of randomly moving, non-interacting point particles (the gas doesn’t have any chemical reactions or interactions).

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3
Q

What is the definition of thermodynamics?

A

The study of the effects of work, heat, and energy in a system

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4
Q

What are the 3 laws?

A
  • 1st Law - Work, heat and energy
  • 2nd Law - Entropy
  • 3rd Law - Free energy reaction will occur simultaneously
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5
Q

What is enthalpy (H) ?

A

Is the total energy content of a compound to calculate the generation of heat.

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6
Q

What is the standard enthalpy (H)?

A

The standard enthalpy is the heat of the reaction to form a compound at 25 °C, 1 atm.

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7
Q

What happens when a reaction absorbs heat?

A
  • ∆H>0
    -Positive change in enthalpy
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8
Q

What happens when a reaction releases heat?

A

deltaH<0

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9
Q

What is the heat of a reaction?

A

The sum of the standard enthalpies of the products - the sum of the standard enthalpies of the reactants

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10
Q

What does free energy provide?

A

Free energy provides redox potential but not its rate

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11
Q

What accelerates redox reactions?

A

Living organisms that contain enzymes as an organic biocatalyst

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12
Q

How does the acceleration of redox reactions work?

A

Acts by lowering the activation energy of a reaction

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13
Q

What is the chemical composition of air?

A
  • Nitrogen - 78%
  • Oxygen - 21%
  • Carbon dioxide - 0.0350 %
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14
Q

What gives higher photon energy?

A

Higher frequency/ shorter wavelength

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15
Q

Why is CO2 and other gases absorbed?

A

The bonding frequency is just right to absorb those infrared

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16
Q

What type of radiation does earth emit?

A

Earth emit low energy waves - infrared radiation

17
Q

How much does CO2 contribute to GHG?

A

60%

18
Q

How can acid rain occur?

A

Nitrogen in the air and when combusted, the nitrous oxide mixes with water and creates acid rain - nitric acid

19
Q

What does sulphur oxide mixed with water create?

A

Sulfuric acid

20
Q

What is normality (N) ?

A
  • The number of equivalents of a solute divided by the volume of the solution in liters.

CIVE40010 - Energy and environmental engineering (21 decks)

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