Flashcards
C2.5 - Salts
Cards in this deck (50)
- 1what is a base?a substance with a ph greater than 7
- 2what is an acid?a substance with a ph less than 7
- 3what do acids form in water?H+ ions
- 4what is an alkali?a base that dissolves in water to form OH- ions
- 5acid + base ->salt + water
- 6what is an indicator?a substance that changes colour in the presence of different ph's
- 7what is universal indicator?a mixture of dyes that turns red with acids, green at neutral and blue with alkalis
- 8what is neutralisation?adding an acid to a base to achieve a ph of 7 - neutral
- 9H+ + OH- ->H2O
- 10acid + metal ->salt + hydrogen
- 11hydrochloric acid salts are called?chloride
- 12sulphuric acid salts are called?sulphide
- 13nitric acid salts are called?nitrate
- 14zinc + hydrochloric acid ->zinc chloride + hydrogen
- 15what is the test for hydrogen?the squeaky pop
- 16acid + metal hydroxide ->salt + water
- 17acid + metal oxide ->salt + water
- 18when metal oxides and metal hydroxides dissolve in water they have what ph?alkaline
- 19acid + metal oxide/hydroxide is what type of reaction?neutralisation
- 20zinc oxide + sulphuric acid ->zinc sulphate + water
- 21ZnO(s) + H2SO4(aq) ->ZnSO4(aq) + H2O
- 22acid + metal carbonate ->salt + water + carbon dioxide
- 23hydrochloric acid + sodium carbonate ->sodium chloride + water + carbon dioxide
- 242HCl (aq) + Na2CO3 (s) ->2NaCl (aq) + H2O (l) + CO2 (g)
- 25what type of reaction is an acid + metal carbonate?neutralisation
- 26are nitrates soluble or insoluble?soluble
- 27are most sulphates soluble or insoluble?soluble
- 28is lead sulphate/chloride/bromide/iodide soluble or insoluble?insoluable
- 29is barium sulphate soluble or insoluble?insoluble
- 30are most chlorides soluble or insoluble?soluble
- 31are most bromides soluble or insoluble?soluble
- 32are most iodides soluble or insoluble?soluble
- 33is silver chloride/bromide/iodide soluble or insoluble?insoluble
- 34are common salts of sodium, potassium and ammonium soluble or insoluble?soluble
- 35is sodium/potassium carbonates soluble or insoluble?soluble
- 36are most carbonates soluble or insoluble?insoluble
- 37are most hydroxides soluble or insoluble?insoluble
- 38is sodium/potassium hydroxide soluble or insoluble?soluble
- 39what type of reaction is making an insoluble salt?precipitation (making of a solid)
- 40what type of reactants makes an insoluble salt?two soluble salts
- 41how do you make an insoluble salt?*mix a spatula of both soluble salts with distilled water
*mix the two solutions together
*insoluble salt will form a precipitate
*filter the insoluble salt into a conical flask and clean with distilled water - 42soluble salt + soluble salt ->insoluble salt + soluble salt
- 43lead nitrate + sodium chloride ->lead chloride + sodium nitrate
- 44is lead chloride or sodium nitrate an insoluble salt?lead chloride
- 45acid + insoluble reactant ->soluble salt
- 46acid + metal oxide/hydroxide ->soluble salt + water
- 47how do you make a soluble salt from an insoluble reactant?*base dissolves in acid and excess solid sinks to bottom when all dissolved
*filter off excess solid
*heat and evaporate liquid to be left with salt - 48acid + soluble reactant ->soluble salt + water
- 49acid + sodium/potassium/ammonium hydroxide ->soluble salt + water
- 50how do you make a soluble salt?*use titration to find correct amount of alkali to neutralise acid by using indicator
*repeat using measurements without indicator to avoid contamination
*evaporate water to be left with salt
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- AS - Level Chemistry (C2) Flashcards on C2.5 - Salts, created by Kelly Jowett on 25/04/2015.
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- Kelly Jowett
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