Stogs GCSE Interleaving Titrations L

What is the concentration of the solution if 0.2 moles are dissolved in 25cm³?

• 0.008 moldm^-3

• 0.008 molcm^-3

• 8 moldm^-3

• 8 molcm^-3

0.5 mol of solute is dissolved in 250 cm³ of solution. Calculate its concentration.

• 0.002 moldm^-3

• 2 moldm^-3

• 1 moldm^-3

• 0.5 moldm^-3

Calculate the amount of solute dissolved in 2 dm³ of a 0.1 mol/dm³ solution.

• 2 grams

• 2 moles

• 0.2 grams

• 0.2 moles

Calculate the volume of a 2 mol/dm³ solution that contains 0.5 mol of solute.

• 0.25 dm³

• 2.5 dm³

• 25 dm³

• 250 cm³

A solution of hydrochloric acid has a concentration of 2 moldm^-3. What is its concentration in gdm^-3?

• 0.055 gdm^-3

• 18.25 gdm^-3

• 73 gdm^-3

• 7.3 gdm^-3

A solution of nitric acid has a concentration of 31.5 gdm^-3. What is this in moldm^-3?

• 1.0 moldm^-3

• 0.5 moldm^-3

• 2.0 moldm^-3

• 0.2 moldm^-3

Weak acids:

• Are a source of H⁺ ions.

• Fully dissociate in solution.

• Are a source of OH^- ions.

• Partially dissociate in solution.

An alkali is...

• ... a source of H⁺ ions.

• ... a soluble base.

• ... a precipitate.

• ... a source of OH^- ions.

Tags

NGSS.HS-PS1-1

High pH values show solutions are:

• Strongly acidic

• Strongly alkaline

• Neutral

• Weakly acidic

In an alkaline solution methyl orange is:

• Yellow

• Orange

• Red

• Blue