CHE 1120 Pre-Labs

Robert Boyle

One of the first scientists to study the properties of gases quantitatively…

Inversely

The volume of a gas is _____ proportional to the pressure exerted on it.

Directly

The volume of a gas is _____ proportional to the temperature of the gas (provided the pressure and amount are held constant).

PV = nRT

The ideal gas equation

Represents the boiling point elevation constant

K_b

Calcium chloride dihydrate

CaCl₂2H₂O

Sodium carbonate, found in soda ash

Na₂CO₃

Carbonic acid (a weak acid)

H₂CO₃

Temperature and catalysts

Affects the rate of a chemical reaction

Chemical equilibrium

A state in which the rates of two opposing reactants are forming at the same rate.

The Bronsted-Lowry acid-base definition

The strength of an acid is related to its ability to donate protons.

Acetic acid (weak acid)

CH₃COOH

All weak acids

Very small K_a values

The Henderson-Hasselbalch equation

What is the AHA equation?

Magnesium hydroxide

Mg(OH)₂

Electrochemistry

The study of chemical processes involving a flow of electrons.

Michael Faraday

This scientist first explored quantitative aspects of electrochemical processes…

Directly

The amount of chemical change occurring during electrolysis is _____ proportional to the amount of electricity that is passed through the electrolytic cell.

Lead (II) chromate

PbCrO₄

Liters

What units are used for volume in the ideal gas equation?

Molality

Moles solute / kg solvent are the units of the _____ of the solution.

Calcium chloride

CaCl₂

Raise

The addition of a nonvolatile substance to a pure liquid will _____ the boiling point of a liquid.

Light purple

What is the color of the end point for the soda ash experiment?

Sodium thiocyanate

NaSCN

Equilibrium constant, K

The ratio of products to reactants in a chemical equation at equilibrium is referred to as the _____?