Note: All Khan Academy content is available for free at (www.khanacademy.org)

How to oxidize aldehydes using Tollens' reagent (and form a silver mirror). Note: All Khan Academy content is available for free at (www.khanacademy.org)

Experiment 22.1a

The Hydrolysis and Saponification reactions using trigylcerides.

Experiment 21.3

To estimate the concentration of free chlorine in swimming-pool water or bleach using a comparitor or a colorimeter.

Learn how to measure dissolved oxygen content using the winkler method.

To deduce the total hardness in a water sample using ethylenediaminetetraacetic acid (edta).

To study effect of concentration on the reaction rate of sodium thiosulfate solution and hydrochloric acid.

Place the hydrogen peroxide solution in the flask. Ad a small amount of manganese dioxide or other suitable catalyst to speed up the decomposition of the hydrogen peroxide. Note that the solution is bubbling. Light a candle or a burner. Holding a wood splint with tongs, light the end of the wood splint. Allow it to burn for a few seconds until you notice that the end of the wood splint is glowing red. Blow out the flame. Insert the glowing end of the wood splint into the flask. If sufficient oxygen has been generated, the wood splint will burst into flame. Withdraw the burning splint from the flask. This demonstration can be repeated several times until the reaction has ceased. EXPLANATION This reaction is the catalytic decomposition of hydrogen peroxide: 2 H2O2 → 2 H2O + O2 This is the classic test for oxygen gas.

Sodium thiosulfate titration to determine the percentage and moles of hypochlorite in commercial bleach.

Using a titration method in order to find the true percentage of iron in 100mg Iron Tablets.

This short flash animation shows how we can determine the number of moles of water of crystallisation in a hydrated salt such as washing soda. The salt is weighed, then heated, cooled and reweighed over and over until a constant mass is reached. The ratio of anhydrous salt to water of crystallisation is determined in grams and converted to moles.

Determining the concentration of ethanoic acid in commercial vinegar.

Leaving Cert Chemistry Mandatory Experiment - Acid/Base Titration: Using a standard solution of Sodium Carbonate to standardise a given solution of Hydrochloric Acid.

Experiment 13.1

Experiment 10.1a

Dissociation of ions in aqueous solutions: related to experiment 6.1

Experiment 6.1d

Demonstration: how to detect the presence of Sulfate Ions by using Barium Chloride.

Experiment 6.1b

Experiment 6.1a

We test several chloride salts for their flame test colors. We then determine the identity of two unknowns via flame test.

Experiment tutorial. Note: All Khan Academy content is available for free at (www.khanacademy.org)

Note: All Khan Academy content is available for free at (www.khanacademy.org)

An introduction to buffer solutions and the derivation of the Henderson-Hasselbalch equation. Note: All Khan Academy content is available for free at (www.khanacademy.org)

How to calculate the pH before any base is added and at the half-equivalence point. Note: All Khan Academy content is available for free at (www.khanacademy.org)

Note: All Khan Academy content is available for free at (www.khanacademy.org)

Equivalence point when titrating a weak acid. Note: All Khan Academy content is available for free at (www.khanacademy.org)

Note: All Khan Academy content is available for free at (www.khanacademy.org)

the instrument demonstrated

a demonstration of the Experiment

the experimnent demonstrated