Chapted 14 & 15-The Behavior Of Gases & Water And Aqueous Solutions Flashcards
What factors affect has pressure?
1-Amount of gas.
2-the volume.
3-the temperature.
Why are gases easier to compress than solids or liquids?
Because if the space between the particles in a gas.
Explain how the pressure of multiple gases is additive.
For example the atmospheric pressure is 1 atm, this could me 0.4 atm is oxygen, 0.20 is nitrogen, and 0.4 is carbon-dioxide. These are partial pressures (P1, P2, P3,..) and if you add them all together they’ll make a total pressure (PT).
What is PV=nRT?
PV=nRT is the gas law.
What is the relationship between the left side of PV=nRT to it’s right side?
The left side is directly proportional to it’s right side.
If PV goes up, nRT goes up, and vice versa.
What is the relationship between PV in PV=nRT?
P is inversely proportional to V.
If P goes up, V will go down, and vice Versa.
What is Diffusion?
Diffusion is the tendency of molecules to move towards areas of lower concentration until the concentration is uniform throughout.
What is Effusion?
Effusion is when a gas escapes through a tiny hole in it’s container.
What kind of gas would diffuse and effuse more easily than other gases?
Gases with a lower mass will effuse and diffuse more easily than others.
Is water polar or non-polar?
Water is polar and it has an electronegative oxygen with two bonds to electro positive hydrogens.
What is the significance of water’s electronegative oxygen?
The oxygen will have two lone pairs of electrons that will be attracted to other atoms and elements.
How do polar and non-polar substances dissolve?
Polar substances dissolve in water while non-polar substances remain with other non-polar substances.
What will dissolve in water and what won’t?
Ionic compounds (eg table salt) will dissolve in water because they’re polar, hydrocarbons (non-polar) will only dissolve in other hydrocarbons, like dissolves in like.
What are electrolytes?
They are substances that dissolve on water to make ions and conduct electricity. Ionic compounds make strong electrolytes.
