Teaching and Learning with VB

C3.6: Aqueous systems, AS 91392

Work Space

Blank work sheets can be accessed to practice and consolidate learning
To check your work there are completed work sheets, with sample answers
Quizzes to check learning can be accessed from here
Lab work / practical exercises can be accessed here
In preparation for exams exams past exam questions can be accessed for practice
To check your work there are sample answers for the exam questions
Handouts / revision aides can be found on this page

Make copies of any blank worksheets and exam questions.

Worksheets

A set of questions on Ks and solubility with answers1. Calcium fluoride has a solubility of 0.016 gL⁻¹ in water at a certain temperature M(CaF₂) = 78.1 gmol⁻¹ Write the equilibrium reaction Write the Ks Calculate the solubility of CaF₂ in molL⁻¹ Calculate Ks 2. Strontium flouride has a solubility of 0.012 gL⁻¹ per 100 g of water M(SrF₂...

Weak acid and base calculationsWeak acid and base calculations

A set of practice questions on pH calculations: weak acids, weak bases and salts with answers1. Calculate the pH of a 0.15 molL⁻¹ of hypochlorous acid (HOCl) Ka (HOCl) = 2.88 x10⁻⁸ Remember to write equilibrium equation to determine Ka / Kb expression Remember the 2 key assumptions 2. Calculate the pH of a 0.025 molL⁻¹ solution of HNO₂ Ka ( HNO₂ ) = 4.5 x 10⁻⁴ 3. Calculate ...

Chem 3.7 #6 BuffersCHEMISTRY 3.7 _ Name: _ WORKSHEET SIX AQUEOUS SYSTEMS Buffer solutions 1 Describe the function of buffer solutions. 2. (a) Describe the composition of an effective buffer solution (b) Describe two ways that a buffer solution can be ...

Chem 3.7 #7 Titrations.docCHEMISTRY 3.7 _ Name: _ WORKSHEET SEVEN AQUEOUS SYSTEMS Titrations 1 (a) 0.1 mol L-1 NaOH solution is added to 8 mL of 0.1 mol L-1 HCl in a titration experiment. (i) What is the pH of the original acid solution. (ii) What is the pH of the final solution w...

A set of questions on Ka, pKa, acid and base strengths with answers. Use the table above to answer the following question: 1. What is Ka for: CH₃COOH; NH₄⁺, H₂O, HCl, H₃O⁺ 2. Complete the table Base Conjugate acid Ka Pka OH⁻ H₂O 2.0 x 10⁻¹⁶ CH₃COO⁻ CH₃COOH 1.74 x 10⁻⁵ NH₃ NH₄⁺ 5.75 x10⁻¹0 Which is the ...

pH and indicator questions and answers.pdf

Practice questions species in solution with answers

quizzes

Other resources for work and practice

Slides to check acid and base calculations

lab / practical exercise

Solubility and solubility product practical

Species in solution practical

Ka an d Kb practical

Solubility and common ion practical

NCEA Exam questions

AQUEOUS SYSTEMS EXAM PRACTICE QUESTIONSSpecies in solution, Acids and Bases, pH calculations, solubility (2017) Q 1) a) Hydrogen fluoride, HF, and hydrogen bromide, HBr, both form acidic solutions when added to water. (i) Write equations for the reaction of each acid with water. Hydrogen fluoride with water Hydrogen bromide w...

ANSWERS TO AQUEOUS SYSTEMS EXAM PRACTICE QUESTIONS Species in solution, Acids and Bases, pH calculations (2017) Q 1) a) Hydrogen fluoride, HF, and hydrogen bromide, HBr, both form acidic solutions when added to water. (i) Write equations for the reaction of each acid with water. Hydrogen fluoride with water HF + H2O ⇋ F- (aq) + H3O+ (aq) ...

Revision documents / handouts

Aqueous systems equationsSOLUBILITY ACIDS and BASES BUFFERS and TITRATIONS Remember: Le Chatelier and equilibrium principles; Conjugate pairs; Species in solution and [relative] and n = m ÷ M and n = c x v Calculating Ks from solubility Strong Acid and strong base Buffers Write equilibrium express...

pH recap table.png

Aqueous systems flowchart

Set of flash cards.

Report abuse