Chemistry

Consider the following reaction equation: X(g) + Y(g) ⇌ XY(g); ∆H = + 220KJ mol-1 If the temperature of the system is increased, the

A. backward reaction would be favoured B. forward reaction would favoured C. reaction would stop D. reaction would be at…

6 years ago

Which of the following metallic oxides is amphoteric?

A. AI2O3 B. Fe2O3 C. MgO D. Na2O Correct Answer: Option A A. AI2O3

6 years ago

When NH4CI was dissolved in water, the container was cold to touch. This implies that?

A. the process is endothermic B. the process is exothermic C. NH4CI is highly soluble in water D. NH4CI forms…

6 years ago

Which of the following statements about enthalpy of neutralization is correct? It

A. is constant for a strong acid and a strong base B. cannot be determined using calorimeter C. has a…

6 years ago

The colour of phenolphthalein indicator in alkaline solution at the end-point of an acid-base titration is?

A. colourless B. orange C. pink D. yellow Correct Answer: Option A A. colourless

6 years ago

Which of the following equimolar solutions has the highest conductivity?

A. CH3COOH(aq) B. H2CO3(aq) C. H2SO4(aq) D. NaOH (aq) Correct Answer: Option C C. H2SO4(aq)

6 years ago

The equation P = K/V illustrates?

A. Boyle's law B. Charles' law C. Dalton's law D. Gay Lussac's law Correct Answer: Option A A. Boyle's law

6 years ago

The initial volume of a gas at 300 K was 220 cm³ Determine its temperature if the volume became 250 cm³

A. 183 K B. 264 K C. 300 K D. 341 K Correct Answer: Option D D. 341 K

6 years ago