CIE Jun 2014 v1 Paper 2 Q3

Answers available below

PMT (a) In this question, K, L and M refer to a halogen atom or halide ion. For each part question, read the information and complete the answer lines below. (i) When concentrated sulfuric acid is added to solid NaK, white fumes are produced that turn damp blue litmus paper red. No other colour changes are observed. identity of K =equation for reactionexplanation of observation[3] (ii) When silver nitrate solution is added to an aqueous solution of NaL, a precipitate forms that remains after the addition of concentrated ammonia solution. identity of L =colour of precipitateequation for reaction[3] (iii) M2 is a liquid at room temperature with a boiling point higher than that of chlorine but lower than that of iodine. identity of M =explanation[2]UCLES 2014 9701/21/M/J/14 [Turn over<br /> PMT (b) The diagram below is a simpli ed representation of a diaphragm cell. product B product C concentrated brine titanium anode diaphragm steel cathode product D (i) Identify each of the products. BCD[3] (ii) Give the equations for the two electrode reactions. anodecathode[2] [Total: 13]UCLES 2014 9701/21/M/J/14<br />

Show answer