Question

Question 14 The melting point of a pure compound is known to be 110-111º. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity. 90-96 111-113 90-91 110-111 5 pts Question 15 You and your lab partner take melting points of the same sample. You observe a melting point of 101-107°C, while your partner observes a value of 110-112°C. Explain how you can get two different values with exactly the same sample. One of the lab partners may have heated the melting point device too rapidly! All the answers Different people can make different judgements as to when a compound has begun to melt Melting point apparatus can be out of calibration

Answer 1

14.

Boiling point of a contaminated solution will always be higher than the boiling point of pure solvent.

Out of the given option only one is showing boiling point higher than the original boiling point of pure one, 111-113

Answer = 111-113