Acid-Base Reactions and titrations

Question 1

Neutralization Reactions

Answer 1

The reaction between an acid and a base produces an ionic compound (a salt) and water:

Question 2

Salt

Answer 2

A SALT is an ionic compound that is composed of the anion from an acid and a cation from a base.

Question 3

A NEUTRAL AQUEOUS SOLUTION OF A SALT IS FORMED WHEN…

Answer 3

ANY STRONG ACID REACTS WITH ANY STRONG BASE IN THE MOLE RATIO FROM THE BALANCED CHEMICAL EQUATION

Question 4

How to tell if a neutralization reaction occurs

Answer 4

For most neutralization reactions, there are no visible signs that a reaction is occurring, because all solutions are clear. One way to see when a neutralization occurs is to use an ACID-BASE INDICATOR, which is a substance that changes colour in acidic and basic solutions.

Question 5

Titration

Answer 5

the concentration of one solution is determined by quantitatively observing its reaction with a solution of known concentration

Question 6

Standard solution

Answer 6

The solution of known concentration.

Question 7

What is the goal of a titration

Answer 7

to find the point at which the number of moles of the standard solution is stoichiometrically equal to the original number of moles of the unknown solution

This point is referred to as the EQUIVALENCE POINT

Question 8

Equivalence point

Answer 8

all the moles of hydrogen ions have reacted with an equal number of moles of hydroxide ions

Question 9

End point

Answer 9

when the indicator changes colour (the indicator is chosen so that it matches the equivalence point, or is as close to it as humanly possible!)