Compounds and Stoichiometry

Question 1

Equivalent Mass

Answer 1

Mass of an acid that yields 1 mole of H+ or mass of a base that reacts with 1 mole of H+.

Question 2

GEW

Answer 2

molar mass / mol H+ or e-

Question 3

Equivalents

Answer 3

mass of compound / GEW

Question 4

Normality

Answer 4

Eq/L

Question 5

Molarity

Answer 5

normality / mol H+ or e-

Question 6

Empirical Formula

Answer 6

Simplest whole-number ratio of atoms

Question 7

Molecular Formula

Answer 7

Multiple of empirical formula to show exact # of atoms of each element.

Question 8

For elements that can form more than one positive ion, the charge is indicated by…

Answer 8

Roman numeral in parentheses following the name of the element (ex. Fe2+ = Iron(II))

Question 9

For monatomic anions, drop the ending of the name and add…

Answer 9

-ide (ex. F- = Fluoride)

Question 10

Oxyanions

Answer 10

Polyatomic anions that contain oxygen
More oxygen = -ate (ex. NO3- = Nitrate)
Less oxygen = -ite (ex. NO2- = Nitrite)

Question 11

Combination Reaction

Answer 11

Two or more reactants forming one product (ex. 2H2 + O2 –> 2H2O)

Question 12

Decomposition Reaction

Answer 12

Single reactant breaks down. (ex. 2HgO –> 2Hg + O2)

Question 13

Combustion Reaction

Answer 13

Involves a fuel, usually a hydrocarbon, and O2. Commonly forms CO2 and H2O.
(ex. CH4 + 2O2 –> CO2 + H2O)

Question 14

Single-Displacement Reaction

Answer 14

An atom/ion in a compound is replaced by another atom/ion. (ex. Cu + AgNO3 –> Ag + CuNO3)

Question 15

Double-Displacement Reaction

Answer 15

Elements from two compounds swap places. (ex. CaCl2 + 2AgNO3 –> Ca(NO3)2 + 2AgCl)

Question 16

Neutralization Reaction

Answer 16

A type of double-displacement reaction. (ex. Acid + base –> salt + H2O)

Question 17

-ic

Answer 17

Have one more oxygen than -ous.

Question 18

-ous

Answer 18

Has one fewer oxygen than -ic.

Question 19

Hydrolysis Reaction

Answer 19

Using water to break the bonds in a molecule