FeaturesHow It WorksFor ParentsPricingContactLog inStart free — no credit card needed →

Chemistry · Unit 2 · Aqueous solutions and acidity · Aqueous solutions and molarity

State that square brackets ([ ]) are used to denote concentration.

Practise this objective

AI-marked practice questions tied to QCAA mark schemes for this exact LO. Free to start.

Start free practice

Practice questions for this objective

Full questions, answers and worked solutions unlock when you start a free practice session.

Question 1

In an aqueous chemistry experiment, a student prepares a sodium hydroxide solution and needs to express its concentration in a standard chemical equation. Which notation correctly represents the concentration of sodium hydroxide in the solution?

Worked answer
🔒 Start free to see full answer
Question 2

What do square brackets ([ ]) represent in the expression Kc = [H₂O]³[CO₂]³ / [C₃H₈][O₂]⁵?

Worked answer
🔒 Start free to see full answer
Unlock all 2 answers — free

More in Aqueous solutions and molarity

← Previous
State that pH is dependent on the concentration of hydrogen ions in solution.
All LOs in Aqueous solutions and molarityBack to full Chemistry syllabus