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Recognize the effect common ions exert on acid ionization and pH, and mechanisms by which solutions are buffered by ions.
Salicylic acid, used in the manufacture of aspirin, contains only the elements carbon, hydrogen and oxygen.
What will you mix using the above stock solutions to make your buffer? Before you begin any calculations, explain your strategy and any assumptions.
What do we know about DNA damage caused by nuclear radiation (the Hiroshima and Nagasaki atomic bombs)?
Calculate the work done when 50 g of iron dissolves in hydrochloric acid in (a) a closed vessel and (b) an open beaker.
A certain mass of calcium carbide, CaC2, reacts completely with water to produce 64.5 L of acetylene, C2H2, at 50 degrees C and 1 atm.
In an industrial process, nitrogen has to be heated to 500K at constant volume. If it enters the system at 300 K and 100 atm.
At STP, 0.280L of a gas weighs 0.400g. Calculate the molar mass of the gas.
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. the temp. and the pressure of ozone in the stratosphere.
The vapor pressure of water at 22 degrees C is 19.800 torr. If you put 26.662 g of water in a cubic container that is 1.1000 m on an edge.
Write a balanced chemical equation for the reaction between hydrogen selenide and tin (including physical states).
How would you prepare 1.0 L of an aqueous solution of sodium chloride having an osmotic pressure of 25 atm at 17°C?
The mixture is allowed to react, producing nitrogen trichloride. Calculate the partial pressures of the products and reactants.
About 3.1 kg of H2 is required for a vehicle to have a 500 km range. Assume ideal gas behavior and a storage tank of 60 L a comparable size.
What volume of oxygen gas is required to burn 0.5562 of propane gas C3H8 if both gases are measured at the same temperature?
A gas with a volume of 4.0L is contained is a closed container. Indicate the changes in pressure when the volume undergoes the following changes.
What is the volume of a quantity of a gas at 172 Celcius, if its volume is 262 mL at -25 Celsius and the pressure remains constant.
Using the relation ' 1 mole of a gaseous compound has a volume of 22.41 dm3 ' gives us the volume of the formed CO2 .
A nitrogen container has 100.0 liters of gas at a pressure of 3200 psi ruptures in a room at 28° C and 0.92 atm pressure.
How many moles of chlorine atoms are there in a container that holds 1.529 kg of XCl5 gas (where X = unknown element) at 600.5°C at a pressure of 1213 torr?
An 11.2 L sample of gas is determined to contain 0.50 moles N2. At the same temperature and pressure how many moles of gas would there be in a 20. L sample?
Fluorine gas exerts a pressure of 975 torr. When the pressure is changed to 1.50 atm, its volume is 250 mL. What was the original volume?
What volume does the balloon have when it has risen to a point in the atmosphere where the pressure is 200 Torr and the temperature is minus -45 degree C?
At conditions of constant temperature and pressure, the volume of a sample of ideal gas is proportional to the number of moles of gas present.