1. This question is about the reaction between propanone and an excess of ethane-1,2-diol, the equation for which is given below.
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In a typical procedure, a mixture of 1.00 g of propanone, 5.00 g of ethane-1,2-diol and 0.100 g of benzenesulphonic acid, C6H5SO3H, is heated under reflux in an inert solvent. Benzenesulphonic acid is a strong acid.
When the concentration of benzenesulphonic acid is doubled, the rate of the reaction doubles. It can be deduced that
A the reaction is first order overall.
B the reaction is third order overall.
C the reaction is acid-catalysed.
D units for the rate constant, k, are mol–2 dm6 s–1.
| | | | | | | | |Answer: | |
|Directions summarised |
|A |B |C |D |
|1, 2 and 3 |1 and 3 |2 and 4 |4 only |
|only correct |only correct |only correct |correct |
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2. Propanone reacts with iodine in acidic solution according to the following equation
