Do now! Can you read through the notes we made last lesson? Urine sample.

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Presentation transcript:

Do now! Can you read through the notes we made last lesson? Urine sample

Last lesson An experiment to measure the amount of oxygen in air Reactions of iron and methane in air

Copper and air Can you draw a labeled scientific diagram of the apparatus please?

Iron and air Can you carefully set this experiment up please?

Methane and oxygen

methane + oxygencarbon dioxide + water CH 4(g) + O 2(g) CO 2(g) + 2H 2 O (g)

Today’s lesson Reactions of sulphur dioxide in water and with alkalis Laboratory production of carbon dioxide Reactions of carbon dioxide in water and with alkalis Some revision exercises

Sulphur dioxide SO 2 Gather round!

Sulphur dioxide SO 2 Produced by burning sulphur (or burning fossil fuels) S (l) + O 2(g) SO 2(g)

In water Dissolves to form sulphurous acid SO 2(g) + H 2 O (l) H 2 SO 3(aq)

With an alkali Forms a sulphite SO 2 + 2NaOHNa 2 SO 3 + H 2 O

Carbon dioxide

Preparing carbon dioxide Acid + carbonate salt + water + carbon dioxide 2HCl + CaCO 3 CaCl 2 + H 2 O + CO 2

In water Dissolves to form carbonic acid CO 2(g) + H 2 O (l) H 2 CO 3(aq) pH 5.5

In alkali H 2 CO 3(aq) + 2NaOH (aq) Na 2 CO 3(aq) + 2H 2 O (l) acid + basesalt + water

Let’s do some revision!