HCL_(aq) + H₂O_(l) H₃O⁺_(aq) + Cl^-_(aq)
In the reaction above, Cl^-_(aq) is the

A. conjugate acid

B. acid

C. conjugate base

D. base

In which order are the following salts sensitive to light?

A. Agl > AgCl > AgBr

B. AgCl > Agl > AgBr

C. AgBr > AgCl > Agl

D. AgCl > AgBr > Agl

The pOH of a solution of 0.25 mol dm^-3 of hydrochloric acid is

A. 12.40

B. 13.40

C. 14.40

D. 14.60

MnO\(_{4(aq)}\) + 8H\(^+ _{(aq)}\) + Y → Mn\(^{2+} _{(aq)}\) + 4H\(_2\)O\(_{(l)}\)
Y in the equation above represents

A. 2e^-

B. 3e^-

C. 5e^-

D. 7e^-

(1/2)Zn²⁺_(aq) + e^- → (1/2) Zn_(s)
In the reaction above, calculate the quantity of electricity required to discharge zinc.
[F = 96 500 C mol^-1]

A. 0.965 * 10₄C

B. 4.820 * 10₄C

C. 9.650 * 10₄C

D. 48.200 * 10₄C

Given that M is the mass of substance deposited in an electrolysis and Q the quantity of electricity consumed, then Faraday's law can be written as

A. M = Z/Q

B. M = Q/Z

C. M = Z/2Q

D. M = QZ

0.46g of ethanol when burned raised the temperature of 50g of water by 14.3K. Calculate the heat of combustion of ethanol.
[C = 12, O = 16, H = 1, Specific heat capacity of water = 4.2 jg^-1K^-1]

A. +3000 KJ mol^-1

B. +300 KJ mol^-1

C. -300 KJ mol^-1

D. -3000 KJ mol^-1

Powdered marble reacts faster with hydrochloric acid solution than the granular form because the powdered form has

A. more molecules

B. more atoms

C. larger surface area

D. relatively large mass

N_2(g) + O_2(g) ↔ 2NO_(g); ΔH = + 180.6 kJ mol^-1
In the reaction above, increase in temperature will

A. increase the quantity of N₂

B. increase in the yield of NO

C. decrease the yield of NO

D. decrease the quantity of O₂

For a reaction in equilibrium, the species involved in the equilibrium constant expression are

A. gaseous and solid species

B. liquid and solid species

C. solid and dissolved species

D. gaseous and dissolved species