Module 2: Introduction to Quantitative Chemistry Flashcards

1
Q

What does the law of conservation of mass state?

A

Mass is neither created nor destroyed in chemical reactions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is the mole?

A

1 mole of each substance has different mass but contains the exact same number of particles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the limiting reagent?

A

the compound with the lowest number of moles. It limits the quantity of product produced in a chemical reaction.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How do you calculate percentage yield?

A

percentage yield = actual (experimental) yield / theoretical yield x 100.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does the molecular formula tell us?

A
  1. The type of atoms in a molecule
  2. The exact number of each type of atom in the molecule.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does the empirical formula tell us?

A
  1. The type of atom in a molecule.
  2. The simplest ratio of the number of each atom in the molecule.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

True or false: The ratio of the molecular formula is always a multiple of the empirical formula.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the equation used for dilution?

A

C1V1 = C2V2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the process of dillution?

A

Dilution decreases the concentration of a stock solution by adding more solvent to the solution (commonly water).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the volume space occupied by a gas dependant on?

A

Temperature, pressure, amount of gas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What occurs to a gas as the temperature increases?

A

The molecules gain greater kinetic energy causing them to moving more rapidly and occupy a larger space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What occurs to gas molecules as pressure increases?

A

The molecules become more compressed and occupy a smaller space.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is Boyle’s gas law?

A

P1V1 = P2V2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is Gay-Lussac’s gas Law?

A

P1/T1 = P2/T2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is Charles’s gas law?

A

V1/T1 = V2/T2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is Avogadro’s gas law?

A

V1/n1 = V2/n2

15
Q

What is standard temperature & pressure?

A

Temp: 273.15K (0 degrees celcius)
Pressure: 1 atm (101.3kPa)

16
Q

What is standard lab conditions?

A

Temp: 298.15K (25 degrees celcius)
Pressure: 1 atm (101.3kPa)