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http://www.ukagriculture.com/uk_farming/crops/fertilising_crops.htmlhttp://www.ukagriculture.com/uk_farming/crops/fertilising_crops.htmlhttp://www.ukagriculture.com/uk_farming/crops/fertilising_crops.htmlhttp://www.wpbschoolhouse.btinternet.co.uk/page10/page10.htmhttp://www.wpbschoolhouse.btinternet.co.uk/page10/page10.htmhttp://www.wpbschoolhouse.btinternet.co.uk/page10/page10.htmhttp://www.chemsoc.org/networks/learnnet/classic_exp.htmhttp://www.chemsoc.org/networks/learnnet/classic_exp.htmhttp://www.chemsoc.org/networks/learnnet/classic_exp.htmhttp://www.chemsoc.org/networks/learnnet/classic_exp.htmhttp://www.wpbschoolhouse.btinternet.co.uk/page10/page10.htmhttp://www.wpbschoolhouse.btinternet.co.uk/page10/page10.htmhttp://www.wpbschoolhouse.btinternet.co.uk/page10/page10.htm

7/28/2019 Unit 8 - Acids, Bases and Salts (Including Qualitative Analysis)

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f

g

describe eutrophication and waterpollution problems caused by nitratesleaching and explain how high solubilityincreases these problems

describe the displacement of ammoniafrom its salts and explain why adding

calcium hydroxide to soil causes loss ofnitrogen from added fertiliser.

One approach is to summariseeutrophication using a flow chart. It isimportant to focus on the chemical processof solubility causing leaching and give onlya brief outline of the subsequent biologicalprocesses that occur in the river.

Students can heat ammonium salts withsolid calcium hydroxide in test tubes. Use

damp Universal Indicator paper to test forammonia evolved. This also works withproteins e.g. hair, nail clippings.

Water pollution wasintroduced in Unit 4. www.wpbschoolhouse.btinter

net.co.uk/page10/page10.htmClick on ReversibleReactions for information oneutrophication.

7.4a

b

c

Sulphuric aciddescribe the manufacture of sulphuricacid

state the use of sulphur dioxide as ableach and food preservative

state the uses of sulphuric acid(manufacture of fertilisers, detergents,battery acid)

Use fertilisers ammonium sulphate - asthe link to this section

Students should study the manufacture ofsulphuric acid with emphasis on a summary of the main reactions (e.g.

using a flow chart)

equations, including state symbols foreach reactionconsidering the reversible nature of thereaction to form sulphur trioxide (see6.3 above)the large scale importance of sulphuricacid with reference to its uses.

Stress the importance ofvanadium(V) oxide as atransition metal compoundcatalyst to reinforce syllabuslearning objectives 8.3(b)(properties of transition

metals) and 6.1 (b) (catalystsand speed of reaction)

This is an opportunity toteach the gas test for sulphurdioxide (Syllabus learningoutcome 1.3(c))

www.wpbschoolhouse.btinternet.co.uk/page10/page10.htmClick on Extra IndustrialChemisty

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