Ujian Pengukuhan Kimia SK025 Revision

• 8.75×10^-4 M/s

• 2.19×10^-3 M/s

• 8.75×10^-3 M/s

• 2.19×10^-2 M/s

• Rate = k[NOCl]²

• Rate = k[NO][Cl2]

• Rate = k[NO]²[Cl2]

• Rate = k[NO][Cl2]½

A reaction was found to be zero order in A. Increasing of A by a factor of 3 will cause the reaction rate to

• Remain constant

• Increase by a factor of 27

• Increase by a factor of 9

• Triple

Which of the following equations represents the enthalpy change of combustion?

• 2C4H10(g) + 13O2(g) -> 8CO2(g) + 10H2O(g)

• C4H10 + 9/2O2 -> 4CO(s) + 5H2O

• C4H10 + 5/2O2 -> 4C(s) + 5H2O(g)

• C4H10(g) + 13/2O2(g) -> 4CO2(g) + 5H2O(g)

Name the type of enthalpy for the following reaction:

Na+(g) -> Na+(aq) ΔH = -364 kJmol-1

• Standard enthalpy of solution

• Standard enthalpy of hydration

• Lattice energy

• Standard enthalpy of neutralisation

Given their standard reduction potentials, which of the species is going to be oxidized?

Cu /Cu = 0.34V

Zn /Zn = -0.76V

• Zn

• CuSO4

• Cu

• ZnSO4

What reaction occurs at the anode?

Ag /Ag = 0.80V

Ni /Ni = -0.25V

• Ag+ + e- →Ag

• Ag → Ag+ + e-

• Ni2+ + 2e- → Ni

• Ni → Ni2+ + 2e-