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
CHEMISTRY, M5 2019 HSC 17 MC
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?
CHEMISTRY, M6 2020 HSC 33
Excess solid calcium hydroxide is added to a beaker containing 0.100 L of 2.00 mol L¯1 hydrochloric acid and the mixture is allowed to come to equilibrium.
- Show that the amount (in mol) of calcium hydroxide that reacts with the hydrochloric acid is 0.100 mol. (2 marks)
--- 4 WORK AREA LINES (style=lined) ---
- It is valid in this instance to make the simplifying assumption that the amount of calcium ions present at equilibrium is equal to the amount generated in the reaction in part (a).
- Calculate the pH of the resulting solution. (4 marks)
--- 8 WORK AREA LINES (style=lined) ---
CHEMISTRY, M5 2021 HSC 19 MC
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?
- 0.00510 g
- 0.186 g
- 0.465 g
- 0.854 g