Chemistry

In the purification of impure samples of ethyl ethanoate synthesized by esterification; concentrated sodium trioxocarbonate (IV) solution is used to remove

A. water B. basic impurities C. acidic impurities D. ethoxyethane Correct Answer: Option C - acidic impurities

4 years ago

Which of the following are structural isomers?

A. propanoic acid and propan-1, 2-diol B. Propanal and propanone C. Ethanoic acid and propanoic acid D. Ethan-1, 2-diol and…

4 years ago

The decolourization of purple colour of tetraoxomanganate (VII) ion is a test for?

A. alkenes B. alkanols C. alkanals D. alkanes Correct Answer: Option A - alkenes

4 years ago

The enzymes responsible for converting sucrose into two simple isomeric sugars is?

A. maltase B. amylase C. invertase D. lactase Correct Answer: Option C - invertase

4 years ago

What will happen if an aluminium spoon is used to stir a solution of iron (II) trioxonitrates (V)?

A. The spoon will be oxidized while the iron (II) ions will be reduced to the metal B. The spoon…

4 years ago

What is the correct IUPAC name for NO2−?

A. Dioxonitrate (IV) ion B. Trioxonitrate (III) ion C. Trioxonitrate (IV) ion D. Dioxonitrate (III) ion Correct Answer: Option D…

4 years ago

In which of the following reactions can the oxidation number of the nitrogen be said to have increased?

A. 2NO(g) + O2(g) → 2NO2(g) B. NO(g) + Cl2(g) → NOCl2(l) C. FeSO4(aq) + NO(g) → Fe(NO)SO4(s) D. NO(g)…

4 years ago