Chemistry

Soluble salts can be prepared by the following methods except?

A. neutralization B. reaction of an acid with trioxocarbonate(IV) salt C. double decomposition D. reaction of an acid with electropositive…

6 years ago

The property of a chemical reaction that is affected by the presence of a catalyst is?

A. activation energy B. free energy C. equilibrium position D. enthalpy change Correct Answer: Option A A. activation energy Explanation…

6 years ago

Solubility curve can be used in the determination of the?

A. amount of crystals formed B. amount of solvent that can be recovered C. amount of solid drugs in a…

6 years ago

When water was added to a white anhydrous substance X, the colour changed to blue. X is

A. CuSO4 B. FeSO4 C. Na2SO4 D. PbSO4 Correct Answer: Option A A. CuSO4 Explanation When water is added to…

6 years ago

Potassium Chloride solid does not conduct electricity because?

A. it is a covalent compound B. strong cohesive forces make its ions immobile C. strong cohesive force makes its…

6 years ago

Halogens generally react with metals to form?

A. alkalis B. acids C. bases D. salts Correct Answer: Option D D. salts Explanation The word "halogen" is a…

6 years ago

Which of the following statements is NOT a chemical property of an acid?

A. Evolution of ammonia when heated with ammonium salts B. Evolution of carbon dioxide gas when added to a trioxocarbonate…

6 years ago

A hydrocarbon contained 14.3% hydrogen. The empirical formula for the hydrocarbon is [H= 1.0, C= 12.0]

A. CH B. CH2 C. CH3 D. CH4 Correct Answer: Option B Explanation The percentage of Carbon in the compound…

6 years ago

Which of the following gases is not acidic?

A. SO3 B. NO2 C. Co2 D. CO Correct Answer: Option D D. CO Explanation The compound CO is treated…

6 years ago

In a saturated solution at a given temperature, the undissolved solutes are in equilibrium with?

A. the solvent B. dissolved solute particles C. the saturated solution D. insoluble solute particles Correct Answer: Option C C.…

6 years ago