NABTEB

Write a balanced chemical equation for the reaction of chlorine with? – NABTEB QUESTION

i. An aqueous solution of sulphur IV oxide. Cl2 (g) +SO2 (g) +2H2O(g) → H2SO4 (aq) + 2HCl(aq) ii. A metal…

5 years ago

Describe the production of chlorine from brine – NABTEB QUESTION

The electrolytic cell is known as the Kellner - solvary cell. The anode consists of carbon (graphite) rods dipping into…

5 years ago

What is an electrolyte? – NABTEB QUESTION

An electrolyte is a molten compound or a compound in solution which conducts electricity by the movement of its ions…

5 years ago

Give four chemical reactions of ethane (use equations only) – NABTEB QUESTION

Chemical Properties of Ethane. 2C2H6 + 7O2 → + 6H2O + 4CO2 C2H6 + 6Cl2 (light) → C2Cl6 + 6HCl

5 years ago

State the law of constant composition. – NABTEB QUESTION

The law of constant composition states that all pure samples of a particular chemical compound contain the same elements combined…

5 years ago

What do you understand by the term eletrovalency? – NABTEB QUESTION

Eletrovalency is the process of forming an electrovalent bond/ions by transfer of electrons from Substance (usually a metal) to another…

5 years ago

Give THREE differences between a physical and chemical change. – NABTEB QUESTION

Differences between a physical and chemical change Physical change  Chemical change No new substances are formed  Entirely new substances are…

5 years ago

Writes balance equation to show the chemical reaction of ammonia with. – NABTEB QUESTION

i. Concentrated H2SO4 ii. Chlorine gas. Solution i. 2NH3 + H2SO4 → (NH4)2SO4 ii. 2NH3 + 3Cl2 → 6HCl +…

5 years ago

What is meant by each of the following terms? i. Esterification ii. Saponification. – NABTEB QUESTION

Solution: i. Esterification is a chemical reaction between an organic/carboxylic acid and alcohol/alkanol to form ester and water only. OR…

5 years ago

Au; Zn; Mg; Na; Sn; Ca: Use them to answer the following questions – NABTEB QUESTION

i. Arrange the following metals in the order of increasing reactivity. ii. Hence state which of them can be extracted…

5 years ago