Solutions and acids and bases quiz

Red litmus paper in an acid turns

Blue

Blue litmus paper in a base turns

Red

Weak Acid

Does not completely dissociate when dissolved in water.

Strong acids

Do completely dissociate when dissolved in water.

pH indicator

Universal Indicator

Litmus Paper

When does a pH indicator change colors?

In the presence of ions

What does color determine in a Universal indicator test?

It indicates the acidity or alkalinity of a solution, showing a range of colors corresponding to different pH levels.

What are the 2 Colligative Properties we focus on?

Raising boiling point

Lowering freezing point

Boiling point elevation

a solution that contains a nonvolatile solute has a higher boiling point than the pure solvent

Example of boiling point elevation

Adding salt to boiling water

Freezing/Melting Point Depression

The freezing point of a solution is always lower than that of the pure solvent

Colligative properties depend on?

The number of particles present in solution

Ionic solutes dissociate into?

ions. (They have a greater effect on freezing pt than the molecular solids of the same molal conc)

Strong Electrolytes

Ionic compounds that produce many ions in a solution

Weak Electrolytes

Compounds that produce only a few ions in a solution

Put picture of 3 beakers

Determine weak strong and none

Weak electrolytes mean

Weak Acids Weak Bases

Strong electrolytes mean

Strong acids, Strong bases, salts

Nonelectrolytes

Covalent/molecular compounds that do dissolve in solvents but do not ionize.

Is this an acid? HCsub2Hsub3Osub2

Yes it is an acid

An increased concentration of what ion characterizes a solution of a base in water?

Hydroxide ion

Which of the following is an acid-base neutralization reaction?

H₂SO₄ + 2 KOH --> K₂SO₄ + 2 H₂O