26 Jun Dinitogen monoxide (N2O), also known as nitrous
Question
Q1) Dinitogen monoxide (N2O), also known as nitrous oxide or “laughing gas”, is used as an
anesthetic in dentistry. It is manufactured by heating ammonium nitrate. The chemical equation
is:
(Not balanced) (The symbol Δ means heating)
a) Calculated the mass of ammonium nitrate that must be heated in order to produce 100.0
g of nitrous oxide.
b) Determine the corresponding mass of water produced in the reaction.
Use the law of conservation of mass to check your answers
Q2) consider the combustion of carbon monoxide (CO) in oxygen gas:
(Not balanced)
Starting with 201.6 g of CO, calculate the mass of CO 2 produced if there is enough oxygen gas to
react with the entire CO.
Q3) Alka-Seltzer tablets contain aspirin, sodium bicarbonate, and citric acid. When they come into
contact with water, the sodium bicarbonate (NaHCO 3) and citric acid (H3C6H5O7) react to form
carbon dioxide gas, among other products.
(Not Balanced)
The formation of CO2 causes the trademark fizzing when the tablets are dropped into a glass of
water. An Alka-Seltzer tablet contains 1.700 g of sodium bicarbonate and 1.00 of citric acid.
Determine, for a single tablet dissolved in water,
a) Which ingredient is the limiting reactant?
b) What mass of the excess reactant is left over when the reaction is completed?
c) What mass of CO2 forms?
Q4) What is the percent yield for a process in which 10.4 g CH 3OH react and 10.1 g CO2 form
according to the following equation?
(Not Balanced)
Q5) The organic chemical ethylene oxide C 2H4O is commonly used to sterilize the majority of medical
supplies such as bandages, sutures, and surgical implements. It has traditionally been prepared
according to the following reaction:
(Not Balanced)
A more recent synthesis for ethylene oxide is shown here:
(Not Balanced)
Compare the atom economics of these two methods for preparing ethylene oxide.
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