17 (c) The pharmaceutical company makes several batches of aspirin. They test the melting point of each batch to check that it is pure. The melting point of pure aspirin is 135 °C. Look at their results. Batch
Melting point in °C
A
128
B
131–134
C
134
D
138
Which batch contains the purest sample of aspirin? Answer ............................................................. Explain your answer. ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2]
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