Which of the following salts when dissolved in water will NOT give the corresponding pH value?

A. NaHSO₄, pH < 5

B. Na₂CO₃, pH > 8

C. Na₂Cl,pH = 7

D. NaHCO, pH < 6

Which of the following is an acidic salt?

A. NaHSO₄

B. Na₂SO₄

C. CH₃CO₂Na

D. Na₂S

Which of the following solutions will conduct the least amount of electricity?

A. 2.00 M aqueous solution of NaOH

B. 0.01 M aqueous solution of NaOH

C. 0.01 M aqueous solution of hexanoic acid

D. 0.01 M aqueous solution of sugar

How many coulombs of electricity are passed through a solution in which 6.5 amperes are allowed to run for 1.0 hour?

A. 3.90 x 10² coulombs

B. 5.50 x 10³ coulombs

C. 6.54 x 10³ coulombs

D. 2.34 x 10⁴ coulombs

Which of these represents a redox reaction?

A. AgNO₃ + NaCl → AgCAl + NaNO₃

B. H₂S + Pb(NO₃) → PbS + 2HNO₃

C. CaCO₃ → CaO + CO₂

D. Zn + 2HCl → ZnCl₂ + H₂

20 cm³ of 1.0 molar NH₄OH solution when neutralized with 20.05cm³ of 0.1 molar HCl liberated -102 joules of heat. Calculate the heat of neutralization of NH₄OH?

A. -51.O KJ mol^-

B. +57.3 KJ mol^-

C. +57.O KJ mol^-

D. +51.0 KJ mol^-

What is the consequences of increasing pressure on the equilibrium reaction ZnO_(s) + H_2(g) Zn_(s) + H₂O_(I)?

A. The equilibrium is driven to the left

B. The equilibrium is driven to the right

C. There is no effect

D. More ZnO is produced

The approximate volume of air containing 10cm³ of oxygen is?

A. 20 cm³

B. 25 cm³

C. 50 cm³

D. 100 cm³

The reaction Mg + H₂O → MgO + H₂ takes place only in the presence of?

A. excess Mg ribbon

B. excess cold water

C. very hot water

D. steam

When steam is passed through red hot carbon, which of the following are produced?

A. Hydrogen oxygen and carbon (IV) oxide

B. Hydrogen and carbon (IV) oxide

C. Hydrogen and carbon (II) oxide

D. Hydrogen and trioxocarbonate (IV) acid