Edexcel Jun 2017 (IAL) Paper 2 Q10

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8 What is the trend in the thermal stability of the carbonates and nitrates as Group 2 is descended? Carbonates Nitrates decreases decreases decreases increases increases increases decreases increases (Total for Question 8 = 1 mark) D O N O T W R I T E I N T H I S A R E A 9 Which pair of compounds has the more soluble hydroxide and the more soluble sulfate? A Mg(OH)2 and MgSO4 B Mg(OH)2 and SrSO4 C Sr(OH)2 and MgSO4 D Sr(OH)2 and SrSO4 10 The table shows the measurement uncertainty of each reading for some laboratory apparatus. (Total for Question 9 = 1 mark) Laboratory apparatus Measurement uncertainty of each reading / cm3 burette measuring cylinder, 25 cm3 pipette, 25 cm3 volumetric flask, 25 cm3 0.05 0.5 0.06 0.1 The item of laboratory apparatus that would measure a volume of 25 cm3 with the lowest percentage uncertainty is the A burette. B measuring cylinder, 25 cm3. C pipette, 25 cm3. D volumetric flask, 25 cm3. (Total for Question 10 = 1 mark) *P48383A0424* D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br />

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