View the step-by-step solution to: a soild compound is a poor conductor of electricity. when

a soild compound is a poor conductor of electricity. when dissolved in water, it becomes a good conductor of electricty.
what type of chemical bonding would most likely be founded in this compound?

Chem 111
Quiz 5
Fall 2012
1. Draw the correct Lewis Structures of the following molecules and identify their
molecular geometry (2 pts each) (hint: check formal charges to identify the correct
a) CS2 b) CH2O
c) CCl3F
d) NO2Cl 2. Which of the following substances will exhibit dipole forces? (2 pts)
d. SO3
3. Freon-113, C2Cl3F3, has an enthalpy of vaporization of 27.04 kJ/mol and a normal boiling
point of 48°C. At what temperature is the vapor pressure of Freon-113 equal to 76.0 mm
Hg? (R = 8.31 J/K⋅ mol) (3 pts) 4. The phase diagram for CO2 has a triple point at –56.6 °C and 5.19 atm, and a critical point
at 31.0 °C and 73 atm. The solid and gas phases are in equilibrium at –78.7 °C and 1.00
atm. Which of the following statements regarding CO2 is/are CORRECT? (2 pts)
1. Sublimation occurs if the temperature of the solid phase is increased from –
79.0 °C to 0.0 °C at a constant pressure of 2.5 atm.
2. CO2 is a supercritical fluid at 55 °C and 75 atm.
3. At pressures greater than its critical pressure (73 atm), CO2 will not exist as a
solid at any temperature.
a. 1 only
b. 2 only c. 3 only
d. 1 and 2
5. Determine the heat of reaction for the decomposition of one mole of benzene to acetylene
(2 pts)
C6H6(l) → 3C2H2(g)
given the following thermochemical equations:
2C6H6(l) + 15O2(g) → 12CO 2(g) + 6H2O(g)
∆ H = −6271 kJ
2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(g)
∆ H = −2511 kJ 6. Carbon and oxygen react to give carbon dioxide. The reaction of 4.49 g C(s) with 9.21 g
O2(g) releases −113.2 kJ of heat. What is the enthalpy of formation of CO2(g)? (2 pts)

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