Fe 2+ (aq) + Cu(s) → Fe 3+ + Cu 2+ (aq)
Fe 2+ (aq) + Cu(s) → Fe(s) + Cu2+ (aq)
Fe (s) + Cu2+ (aq) → Fe2+(aq) + Cu2+ (aq)
Fe(s) + Cu2+ → Fe2+(aq) + Cu(s)
Correct answer is D
No explanation has been provided for this answer.
What is the value of x in the following equation? Cr2O72- + 14H+ + xe- → 2Cr3+ + 7H2O
1
6
8
12
Correct answer is B
No explanation has been provided for this answer.
Which of the following will displace copper from a solution of copper (ll) salt?
Aluminium ions
Magnesium
Silver
Zinc ions
Correct answer is B
No explanation has been provided for this answer.
A finely divided from of a metal burns more readily in air than the rod from because the rod has
higher molar mass
smaller surface area
protective oxide coating
diferent chemical properties
Correct answer is B
No explanation has been provided for this answer.
Decreases the value of ∆H
Increases the collision rate of reactant particles
Shifts equilibrium position to the right
Reduces the time for attainment of equilibrium
Correct answer is D
In the contact process above; a temperature of about 500ºC and use of Vanadium(V)Oxide catalyst increase the reaction rate and enable equilibrium to be reached in a shorter time.