Flashcards

Hard Water

Himavi Perera Chemistry Year 11 Inglês 9 flashcards

Flashcards do conjunto (9)

1How do you know if your water is hard?There won't be any lather and the soap will just react with water to make scum
2What does hard water contain?Calcium ions, magnesium ions or both
3What does calcium carbonate form when reacting with acid rain?Calcium hydrogencarbonate
4Is calcium hydrogencarbonate soluble?Yes
5What are the two types of hardness?Temporary and permanent
6How is temporary hardness caused?By calcium hydrogencarbonate
7How is permanent hardness caused?By dissolving calcium sulphate
8How is temporary hardness removed?By boiling. The calcium hydrogencarbonate decomposes to form insoluble calcium carbonate
9How is both temporary and permanent hardness removed?By using ion exchange resin. Sometimes a water supply is fed through an ion exchange resin to remove the hardness

Descrição: Year 11 Chemistry FlashCards sobre Hard Water, criado por Himavi Perera em 26-02-2017.
Criado por: Himavi Perera
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