1 pointsSave Answer Question 1 The reason that we pack two melting point tubes f

Question

1 pointsSave Answer Question 1 The reason that we pack two melting point tubes for melting point analysis is O In case one gets broken O So that two data points can be obtained, and the values averaged O The first tube is used to determine the approximate melting point, the second to determine an accurate range O The first tube is used while increasing the melting range slowly, the second while increasing the range rapidly. 1 points Save Answer Question 2 Which two effects usually result from the presense of an impurity in a solid undergoing melting point analysis. the melting point is increased O the melting point is lowered O the melting range is narrowed O the melting range is broadened 1 points Question 3 Which of the following is/are necessary to make good samples for melting point analysis for this experiment? (choose as many as are needed) sample must be packed firmly within the tube sample must be packed to an appropriate height in the tube mixtures must be thoroughly ground together in the mortar and pestle packed melting point tubes must be shaken thoroughly prior to analysis

Explanation / Answer

1.option number 3. Actually first we heat tge capillary fast to get average melting point. Then second time we do slow rate of heating at that range to get accurate melting point.

2. Option number second and fourth.

3. Option number one, two and three.

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