CIE Nov 2017 v2 Paper 2 Q3

Answers available below

The elements in Group 2 show trends in their properties that are typical of metals. The elements in Group 17 show trends in their properties that are typical of non-metals. PMT (a) State and explain the trend in ionisation energy down Group 2.[2] (b) (i) State and explain the trend in melting point down Group 17.[2] (ii) The melting point decreases down Group 2. Explain this trend.[2] (c) Some reactions based on the Group 2 metal barium, Ba, are shown. Ba(NO3)2(aq) + H2(g) reaction 1 Ba(s) reaction 2 Ba(OH)2(aq) + H2(g) heat in air X(s) (i) State the reagent needed for each of reactions 1 and 2. reaction 1reaction 2[2] (ii) Name X and write an equation for its formation. nameequation[2]UCLES 2017 9701/22/O/N/17<br /> PMT (iii) The Ba(NO3)2(aq), produced by reaction 1, is heated to dryness. The anhydrous solid is then heated strongly and decomposes. Barium oxide is produced, together with two other products. Identify the two other products of this decomposition reaction and state what would be observed.[2] (iv) State what would be observed when excess MgSO4(aq) is added to the Ba(OH)2(aq) produced in reaction 2. Explain your answer.[3] [Total: 15]UCLES 2017 9701/22/O/N/17 [Turn over<br />

Show answer