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SAMPLE_CHAP_10_SOLUTIONS - 2 Liquid CO 2(iv Does CO 2 have...

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SAMPLE CHAPTER 10 EXAM QUESTIONS In each of the following groups of substances, pick the one that best fits the indicated description: (Circle the correct answers) (i) highest melting point Cl 2 LiF H 2 O 2 NO (ii) lowest boiling point Xe Kr Ar Ne (iii) strongest hydrogen bonding H 2 O H 2 S H 2 Se H 2 Te (iv) lowest freezing point NaCl Cl 2 HCl I 2 (v) smallest vapor pressure CH 4 CH 3 OCH 3 CH 2 O CO 2 Below is the phase diagram for CO 2 . Answer the following short answer questions concerning the phase diagram for CO 2 . (i) Label the following on the diagram: A. Triple point B. Critical point (ii)What is the temperature at which sublimation occurs at 1 atm?__________________ (iii) Circle the phase that is the most dense: Solid CO
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Unformatted text preview: 2 Liquid CO 2 (iv) Does CO 2 have a normal boiling point? If yes, what is it. _____________________ Suppose that 0.88 g of water condenses on a 75.0 g block of iron that is initially at 22 o C. The enthalpy of vaporization of water is 44.0 kJ/mol and the heat capacity for iron is 0.449 J/g* o C. a. Is condensation an endothermic or exothermic process? b. How much energy is transferred in the condensation of the water? c. If the heat transferred through condensation goes only to changing the temperature of the iron block, what is the final temperature of the block?...
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