4 Solubility of hydroxides and sulfates

 

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Oxford Textbook Pages : 157

CGP Revision Guide Pages : 98

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Show Specification Ref : 3.2.2

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Question 1 / 2

AQA Jun 2012 Paper 2 Q5 do not write outside the box there are many uses for compounds of barium a i write an equation for the reaction of barium with water mark a ii state the trend in reactivity with water of the group metals from mg to ba mark b give the formula of the least soluble hydroxide of the group metals from mg to ba mark c state how barium sulfate is used in medicine explain why this use is possible given that solutions containing barium ions are poisonous use explanation marks extra space wmp jun chem
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Question 2 / 2

AQA Jun 2014 Paper 2 Q4 do not write outside the box there are many uses for group metals and their compounds a state a medical use of barium sulfate state why this use of barium sulfate is safe given that solutions containing barium ions are poisonous marks use why this use is safe b magnesium hydroxide is used in antacid preparations to neutralise excess stomach acid write an equation for the reaction of magnesium hydroxide with hydrochloric acid mark c solutions of barium hydroxide are used in the titration of weak acids state why magnesium hydroxide solution could not be used for this purpose mark d magnesium metal is used to make titanium from titanium iv chloride write an equation for this reaction of magnesium with titanium iv chloride mark wmp jun chem do not write outside the box e magnesium burns with a bright white light and is used in flares and fireworks use your knowledge of the reactions of group metals with water to explain why water should not be used to put out a fire in which magnesium metal is burning marks extra space turn over for the next question turn over wmp jun chem
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