Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

IMAT Chem > Chapter 1: Stoichiometric Relationships > Flashcards

Chapter 1: Stoichiometric Relationships Flashcards

1
Q

What is the relative formula mass of a compound?

A

Sum of the relative atomic masses of its elements.

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

What does molar mass represent?

A

Mass of one mole of a substance.

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

What does the empirical formula of a compound show?

A

The simplest ratio of its atoms.

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

What information does the molecular formula provide?

A

The actual number of atoms in a compound.

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

What determines the theoretical yield in a reaction?

A

The limiting reactant.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Define the theoretical yield of a chemical reaction.

A

The maximum amount of product obtainable if the reaction goes to completion.

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

What is percentage yield in stoichiometry?

A

Actual yield divided by theoretical yield

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

What is a solution in chemistry?

A

A homogeneous mixture of two or more substances.

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

What is titration used for in chemistry?

A

Determining the concentration of a solution.

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

What is a stoichiometric coefficient in a balanced equation?

A

It shows the ratio in which substances react.

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

Why is the limiting reactant important in stoichiometry?

A

It limits the amount of product formed.

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

How do you calculate empirical formula from mass percentages?

A

Convert percentages to moles

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

How do you find molecular formula from the empirical formula?

A

Multiply the empirical formula by the ratio of molar mass to empirical formula mass.

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

What does “molar volume of a gas” mean?

A

The volume occupied by one mole of gas under specific conditions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the standard molar volume of a gas at STP (standard temperature and pressure)?

A

22.4 liters.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the importance of stoichiometry in chemical reactions?

A

It ensures correct proportions for reactants and products.

17
Q

What is the unit of molar mass?

A

Grams per mole (g/mol).

18
Q

How do you determine the limiting reactant?

A

Compare the mole ratio of reactants to their coefficients in the balanced equation.

19
Q

What is the purpose of calculating percentage yield?

A

To measure the efficiency of a reaction.

20
Q

What is meant by “reacting masses”?

A

The mass relationship between reactants and products.

21
Q

How is a homogeneous mixture characterized?

A

Uniform composition throughout.

22
Q

What is the significance of titration?

A

It helps in calculating unknown concentrations.

23
Q

How is the theoretical yield different from actual yield?

A

Theoretical yield assumes 100% efficiency

24
Q

What factors can cause percentage yield to be less than 100%?

A

Impurities

25
Q

What is Avogadro’s constant?

A

Number of particles in one mole

26
Q

What is the formula for calculating percentage yield?

A

(Actual Yield / Theoretical Yield) × 100.

27
Q

What is the role of molar mass in stoichiometric calculations?

A

It converts moles to mass and vice versa.

28
Q

Why is the empirical formula not always the same as the molecular formula?

A

The molecular formula represents the actual number of atoms

29
Q

How do you calculate the number of moles from mass?

A

Mass divided by molar mass.

30
Q

What is the significance of gas laws in stoichiometry?

A

They help relate pressure

31
Q

What does STP stand for in gas calculations?

A

Standard Temperature and Pressure.

32
Q

How do you calculate volume of gas at STP from moles?

A

Multiply the moles by 22.4 liters.

33
Q

What is the molarity of a solution?

A

Moles of solute per liter of solution.

34
Q

How do you prepare a standard solution?

A

Dissolve a known mass of solute in a specific volume of solvent.

35
Q

What is meant by “limiting reactant”?

A

The reactant completely consumed in a reaction

36
Q

What is a solvent in a solution?

A

The substance that dissolves the solute.

37
Q

What is a solute in a solution?

A

The substance dissolved in the solvent.

38
Q

Why is stoichiometric balance crucial in reactions?

A

To obey the law of conservation of mass.

39
Q

What is the purpose of calculating molar volume?

A

To understand the behavior of gases under standard conditions.

IMAT Chem (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions