CH-1374
Purity and melting point
Chemistry · Secondary 4 · Easy · Purity and melting point
A solid Y is thought to be pure naphthalene, which has a melting point of 80 °C. A student heats Y and records:
- It starts melting at 76 °C and finishes melting at 82 °C.
What conclusion is correct?
- It starts melting at 76 °C and finishes melting at 82 °C.
What conclusion is correct?
- Y is impure naphthalene.
- Y is pure naphthalene.
- Y is not naphthalene but is pure.
- No conclusion can be made about its purity.
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