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Chemistry   >   Practical Chemistry Experiments - AQA GCSE (8462)

Titrations - Required Practical 2

 
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Practical Chemistry Experiments - AQA GCSE (8462)

In this course, Dr Nick Chatterton (Birkbeck College, University of London) demonstrates core practicals necessary for the AQA GCSE (9-1) in Chemistry (8462) for Higher/Foundation Tier. We begin by: (i) performing a titration to determine the concentration of an unknown hydrochloric acid solution using a known concentration of sodium hydroxide (Required Practical 2); then (ii) show the preparation of copper sulfate salt through a neutralisation reaction between copper oxide and sulfuric acid, followed by crystallisation (Required Practical 1); before finally (iii) demonstrating the process of distillation to separate a dye-water mixture (Required Practical 8).

Titrations - Required Practical 2

In the first mini-lecture, we demonstrate a titration experiment used to determine the concentration of an unknown hydrochloric acid solution (Required Practical 2). The experiment is set up using a burette filled with a known concentration of sodium hydroxide solution and a volumetric pipette to measure 25 mL of the hydrochloric acid solution with unknown concentration. We begin by demonstrating a rough titration, before performing a more accurate one. The goal is to achieve two concordant values, meaning they are within 0.1 cm3 of each other. The data from the accurate titration is used to calculate the concentration of the unknown hydrochloric acid solution using the balanced chemical equation and stoichiometry.

Cite this Lecture

APA style

Chatterton, N. (2023, July 26). Practical Chemistry Experiments - AQA GCSE (8462) - Titrations - Required Practical 2 [Video]. MASSOLIT. https://massolit.io/courses/practical-chemistry-experiments-aqa-gcse-8462/titrations-required-practical-2

MLA style

Chatterton, N. "Practical Chemistry Experiments - AQA GCSE (8462) – Titrations - Required Practical 2." MASSOLIT, uploaded by MASSOLIT, 26 Jul 2023, https://massolit.io/courses/practical-chemistry-experiments-aqa-gcse-8462/titrations-required-practical-2

Lecturer

Dr Nick Chatterton

Dr Nick Chatterton

Birkbeck College, London