Unit 4 Flashcards
8JUNE25 (18 cards)
What are water of crystallization?
Compound that contain a fixed ratio of water molecules
Where are water of crystallization s found?
Within the crystalline structure of the compound
What is the molar concentration of a solution based on?
Moles of solute and volume of solution
Solute?
The compound being dissolved
- Less abundant
Solvent?
The medium in which the solute is dissolving in
- More abundant
- Usually a compound
What do square brackets mean?
Aqueous and concentration
What uses the absorbency of light to determine concentration?
UV - VIS spectrsocopy
Why is the chemical nature of gas irrelevant to its volume?
B/c particles in a gas are widely spaced out with negligible force
How is gas volume determined?
By the number of particles, temp, and pressure
What does avogadros law state?
Equal volumes of all gasses, when measured at the same temperature and pressure, contain and equal number of particles
What does it mean to have excess reactant?
you have more than enough to react completely with the other reactant
A balloon contains a certain mass of argon gas. The pressure and temp are constant and the same mass for neon gas is added to the balloon what happens?
The volume of the balloon expands by more than two times
Boyle’s law?
When 2 pressures and volumes multiplied together will result in same constant
- When T and moles are constant
Charle’s law?
If T increased the gas particles move faster and the volume will expand
- Applies when pressure and moles are constant
Gay Lussac?
Gas particles move faster at high temps which increases pressure in a constant volume
- V = constant moles= constants
- As temp increases pressure increases
What happens to particles at high temps?
- Close together
- Less volume per gas particle
What happens to particles at low temps?
- Kinetic energy of particles drop
- Particles are in closer constant b/c slower speed
- Harder to maintain gaseous state
If a volume of a sample of gas is increased and the temp s kept constant what happens to the collisions between particles and their movement?
Collision = Less often
Movement = no change
