1. Gold melts at 1063 C and boils at 2970 C. Mention what forms of motion (rotation, translation,
vibration) apply to gold atoms at each of the following temperatures.
a. -273 C
b. 200 C
c. 1500 C
d. 3244 K
2. By what factor will the pressure of a gas change if
its volume is compressed from 20 L to 15 L while its temperature increases from
20 C to 30 C ?
3. A tank containing hydrogen (H2) weighs
40.15 kg. The mass of the empty tank was 40.00 kg. According to the manometer,
the pressure is 500 kPa; its temperature is 20 C.
What is the volume of the tank? Is it big enough to supply you with a litre per
day for a year?
4. Fe + 0.5 O2 à FeO + 266.5 kJ
2 Fe + 1.5 O2 à Fe2O3 + 822.2 kJ
Find the amount of heat involved in the
formation of 1 mole of Fe2O3 from O2 and FeO.
5. Ludovic poured 200 mL of a 0.1
mol/L LiOH solution into a 300 mL
solution of acetic acid. The neutralization effect increased the temperature of
the aqueous solution from 20 to 35 C.
Calculate the molar heat of reaction per
mole of LiOH.
6. A group of students is trying to produce the largest
quantity of hydrogen gas in the shortest time possible. They receive 1 g of Mg
and 500 mL of 0.5 HCl.
o They cannot increase the amount of magnesium or acid
o There is no catalyst available in their cheap school.
What two things can
they still do to increase the rate?
7.Given: Fe + 0.5 O2 à FeO
Find the rate at which FeO is produced in moles/minute if a
mg of oxygen is consumed every second.
8 SKIP. a.How
do preservatives slow down the rate of oxidation in wine or cereal?
b.Give examples of how catalysts play a role in the natural
production of oxygen in the atmosphere and in the unnatural destruction of
ozone.
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Created:April/6/1996; Updated:Dec/26/2008