Pure benzophenone melts at 48.1 degrees Celsius. Your sample of benzophenone began to freeze at 47...
Homework Answers
When it freezes at 47 C, it means the freezing point has been decreased.
This is known as freezing point depression
Two reasons for freezing point depression are:
1. Presence of a soluble substance: When a substance is dissolved in a liquid, the freezing point of the liquid is reduced.
2. Decrease in pressure also causes depression in freezing point in most substances though very large decrease in pressure is necessary.
Hope this helps
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Pure benzophenone melts at 48.1 degree C. Your sample of benzophenone began to freeze at 47.0...
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PLEASE ANSWER ALL PARTS OF THE PROBLEM CORRECTLY. THANK YOU FOR YOUR HELP! 9:00 PM (10%)...
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THANK YOU FOR YOUR HELP!
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Pure benzophenone melts at 48.1°C. Your sample of benzophenone began to freeze at 47.0°C. When you repeated this measurement, the sample again began to freeze at 47.0°C. Give at least two reasonable explanations for this observation.
Pure benzophenone melts at 48.1°C. Your sample of benzophenone began to freeze at 47.0°C. When you repeated this measurement, the sample again began to freeze at 47.0°C. Give at least two reasonable explanations for this observation.
Pure benzophenone melts at 48.1 degree C. Your sample of benzophenone began to freeze at 47.0 degree C. When you repeated this measurement, the sample again began to freeze at 47.0 degree C. Give at least two reasonable explanations for this observation. You tried to read the thermometer when your solution containing the unknown began to freeze but were not certain if the reading was 43.5 degree C or 44.0 degree C so you decided to repeat this try melting...
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...
PLEASE ANSWER ALL PARTS OF THE PROBLEM CORRECTLY.
THANK YOU FOR YOUR HELP!
9:00 PM (10%) Problem 5: A constant-volume thermometer consists of a rigid bulb and a pressure gauge. To obtain accurate results, this thermometer must be calibrated at a known pressure and temperature. Once this is done, the bulb is sealed off from the atmosphere. The volume and number of moles of gas can no longer change and the temperature is calculated from the pressure measurement. 25% Part...
Please Help me to full the all
blank (11 blanks in total)
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