Aussie Maths & Science Teachers: Save your time with SmarterEd
An equilibrium mixture of hydrogen, carbon dioxide, water and carbon monoxide is in a closed, 1 L container at a fixed temperature as shown:
The initial concentrations are
An unknown amount of
Using this information, calculate the unknown amount (in mol) of
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A reaction mixture, not at equilibrium, is composed of both
The rate of the forward reaction is initially greater than the rate of the reverse reaction.
Which diagram shows how
The thermal decomposition of lithium peroxide
Mixtures of
What is the ratio of
Nitrogen monoxide and oxygen combine to form nitrogen dioxide, according to the following equation.
A 2.00 L vessel is filled with 1.80 mol of
What is the equilibrium concentration of
A mixture of 0.8 mol of
When equilibrium was established, the mixture contained 0.5 mol of
What amount of
When performing industrial reductions with
A 1.00 L sealed vessel at a temperature of 1095 K contains
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Carbon dioxide gas is added to the system above and the mixture comes to equilibrium. The equilibrium concentrations of
Calculate the amount (in mol) of carbon dioxide added to the system. (3 marks)
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At a certain temperature, the
0.4 mol of
Which row of the table correctly identifies the direction of the equilibrium shift and the reason for the shift?
The following reaction occurs in an aqueous solution.
A solution containing a mixture of
Calculate the concentration of
A student makes a solution with a final volume of 200 mL by mixing 100 mL of 0.0500 mol L ¯1 barium nitrate solution with 100 mL of 0.100 mol L ¯1 sodium hydroxide solution.
Which row of the table correctly identifies if a precipitate will form under these conditions and the reason?
A student makes up a solution of propan-2-amine in water with a concentration of 1.00 mol L ¯1.
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a.
b.
Assume
a.
b.
Assume
The equation for the autoionisation of water is shown.
At 50°C the water ionisation constant,
What is the pH of water at 50°C?
Ammonia is produced according to the following equilibrium equation.
There are 4.50 moles of nitrogen gas, 1.00 mole of hydrogen gas and 5.80 moles of ammonia in a 10.0 L vessel. The system is at equilibrium at 298 K. The value of
How many moles of nitrogen gas need to be added to the vessel to increase the amount of ammonia by 0.050 moles? (4 marks)
A quantity of silver nitrate is added to 250.0 mL of 0.100 mol L ¯1 potassium sulfate at 298 K in order to produce a precipitate. Silver nitrate has a molar mass of 169.9 g mol ¯1.
What mass of silver nitrate will cause precipitation to start?