AQA Jan 2013 Paper 5 Q4

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some melting points of period oxides are given in this table do not write outside the box melting point k na o sio so so a explain in terms of structure and bonding why sodium oxide has a high melting point marks b explain in terms of structure and bonding why sulfur trioxide has a higher melting point than sulfur dioxide marks c some period oxides have basic properties state the type of bonding in these basic oxides explain why this type of bonding causes these oxides to have basic properties type of bonding explanation marks wmp jan chem do not write outside the box d sulfur dioxide reacts with water to form a weakly acidic solution d i ions are formed when sulfur dioxide reacts with water write an equation for this reaction mark d ii with reference to your equation from part d i suggest why sulfur dioxide forms a weakly acidic solution mark e suggest why silicon dioxide is described as an acidic oxide even though it is insoluble in water mark turn over for the next question turn over wmp jan chem

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