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Review Homework for IMF and Phase of Matter
On separate sheet of paper, do Pg292 (in book) #9,12, 15,37,47,48
1. Using information from previous homework about CO2 and NH3, determine the substance with: a) highest IMF, b) higher # of particles in vapor phase, highest Pvap, and lower boiling point.
2. Do the same as Question 1 with H2O and CH4.
3. Crude oil is a mixtures of compounds. Two of these compounds are hexane (C6H14) and octane (C8H18). What is the physical process called that separates these two liquid? What physical property is used in this process. Which one of the two will separate first and explain why (going all the way back to bond polarity and molecular polarity.
4. How much energy (in cal) does it take to boil away (bring all particles into gas/vapor phase) 5.00grams of ice that started at -3.00deg C knowing:
- Specific heat of ice (cice) = 0.500cal/(g-degC)
- Specific heat of water (cwater) = 1.00cal/(g-degC)
- Heat of Fusion : 80.cal/g
- Heat of Vaporization: 540.cal/g
4. What is the phrase you need to memorize that help remember the type of molecular polarity of a compound/polyatomic ion?
5. What is the property that determines the phase of a substance (assuming all the substances are at the same temperature)?
6. How is a hydrate and a deliquescent different (and similar)?