0 of 7 Questions completed
Questions:
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
0 of 7 Questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
The reaction between magnesium and iron(II) sulphate is represented by the following equation.
Mg + FeSO₄ → MgSO₄ + Fe ∆H = -189 kJ mol⁻¹
Which of the statements below are TRUE about the reaction?
The thermochemical equation represents the displacement of copper.
CuSO₄(aq) + Zn(p) → ZnSO₄(aq) + Cu(p) ∆H = -190 kJ mol-1
Which of the following statements are true?
Mg + Fe²⁺ → Mg²⁺ + Fe ∆H = -189 kJ mol⁻¹
The ionic equation above represents the displacement of iron(II) ion by magnesium. Find the heat change when excess magnesium powder is added into 200 cm³ of iron(II) sulphate solution 0.5 mol dm⁻³
When excess magnesium powder is added to 25 cm³ of 0.5 mol/dm³ copper(II) chloride solution, the temperature increases from 29 °C to 56 °C. What is the heat of displacement for this reaction? [ Specific heat capacity of water = 4.2J g⁻¹ °C⁻¹; Density of water = 1.0g cm⁻³]
The reactions between magnesium and copper(II) sulfate solution is exothermic. Which of the following energy level diagram illustrate this reaction?
Which of the following are required to determine the heat of displacement of copper ion from copper(II) sulphate solution by zinc powder?
Zn + CuSO₄ → Cu + ZnSO₄
∆H = -220kJ/mol
Base on the equation above, calculate the concentrations of copper(II) sulphate solution used if 44kJ if heat is released when excess zinc powder is added to 100cm³ of copper(II) sulphate solution.