Balance the following chemical reaction. (i) Mg + N 2 → Mg 3 N 2

The balanced chemical reaction is as follows: 3 Mg + N 2 → Mg 3 N 2 In this reaction, oxidation of Mg and reduction of nitrogen is taken place. This represents a redox reaction. Magnesium is oxidized, and dinitrogen is reduced.

A catalyst is an agent that alters the rate of a chemical reaction without undergoing any permanent chemical change in the reaction. For example, nickel, platinum or palladium is used as a catalyst in the hydrogenation reaction of unsaturated compounds.

Balance the following chemical equations: (a) Na + O 2 → Na 2 O (b) K + H 2 O → KOH + H 2

(a) A balanced chemical equation is a chemical equation where the number of atoms involved in the reactants side is equal to the number of atoms on the products side. The balanced chemical equation for the given equation is: 4 Na + O 2 → 2 Na 2 O Sodium is a very reactive metal, it tends to react with oxygen to form sodium oxide. (b) The balanced chemical equation for the given equation is: 2 K + 2 H 2 O → 2 KOH + H 2 This is a single replacement reaction where the potassium atom replaces the hydrogen in H 2 O .

Balance the following chemical reaction. C 2 H 6 + O 2 → CO 2 + H 2 O

The balanced chemical reaction is as follows: 2 C 2 H 6 + 7 O 2 → 4 CO 2 + 6 H 2 O Here two moles of ethane reacts with seven moles of oxygen to release four moles of carbon dioxide. This is a combustion reaction in which any substance reacts with oxygen in the presence of air to release carbon dioxide and heat energy.

Balance the following chemical equations: (a) H 2 + O 2 → H 2 O (b) MnO 2 + HCl → MnCl 2 + Cl 2 + H 2 O

A chemical equation in which the number of atoms of each element is equal on both sides of the equation is known as a balanced chemical equation. (a) When hydrogen reacts with oxygen, water is formed. The balanced chemical equation is as follows: 2 H 2 ( g ) + O 2 ( g ) → 2 H 2 O ( l ) (b) Manganese dioxide reacts with hydrochloric acid and forms manganese chloride, chlorine gas and water. The balanced chemical equation is as follows: MnO 2 s + 4 HCl aq → MnCl 2 s + Cl 2 g + 2 H 2 O l

MEDIUM

Earn 100

Write the balanced chemical equation for the following reaction:

Aluminium $+$ Copper chloride $\to$ Aluminium chloride $+$ Copper.

Important Questions on Chemical Reactions and Equations

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Translate the following statement into a chemical equation and then balance it.

Hydrogen gas combines with nitrogen to form ammonia.

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Translate the following statement into a chemical equation and balance it:

Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Translate the following statement into a chemical equation and then balance it.

Hydrogen sulphide gas burns in the air to give water and sulphur dioxide.

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Draw the diagram of the arrangement of apparatus used to show the reaction of zinc granules with dilute sulphuric acid and testing hydrogen gas by burning. Label the soap solution.

EASY

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Why should a magnesium ribbon be cleaned before burning in air?

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Translate the following statement into chemical equation and then balance them.

Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Why should a magnesium ribbon be cleaned before burning in the air?

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Balance the following chemical reaction.

(i) $Mg + N_{2} \to {Mg}_{3} N_{2}$

EASY

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

What is a catalyst?

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Translate the following statement into chemical equation and balance it:
Hydrogen gas combines with nitrogen to form ammonia.

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Draw the diagram of the arrangement of apparatus used to show the reaction of zinc granules with dilute sulphuric acid and testing hydrogen gas by burning. Label the delivery tube.

HARD

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Balance the following chemical equations:

(a) $Na + O_{2} \to {Na}_{2} O$

(b) $K + H_{2} O \to KOH + H_{2}$

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

x {KCIO}_{3} \to y KCl + z O_{2}

. The respective values of

x

y

z

are

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Translate the following statement into chemical equation and then balance them.

Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Balance the following chemical reaction.

$C_{2} H_{6} + O_{2} \to {CO}_{2} + H_{2} O$

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

When an aqueous sodium hydroxide solution is added to the aqueous copper sulphate solution, it forms a bluish-white precipitate of copper hydroxide. What is the colour of copper sulphate solution?

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Which one of the following processes involves a chemical reaction?

EASY

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Translate the following statement into a chemical equation and balance it:
Zinc reacts with sulphuric acid to give zinc sulphate and hydrogen gas.

MEDIUM

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Balance the following chemical equations:

(a) $H_{2} + O_{2} \to H_{2} O$

(b) ${MnO}_{2} + HCl \to {MnCl}_{2} + {Cl}_{2} + H_{2} O$

EASY

Science>Chemistry>Chemical Reactions and Equations>Chemical Changes and Equations

Two chemical mixed by the laboratory assistant in the laboratory are Barium chloride and potassium sulphate. Write a balanced Chemical Equation for the above reaction.

Write the balanced chemical equation for the following reaction: Aluminium + Copper chloride → Aluminium chloride + Copper.

Important Questions on Chemical Reactions and Equations

Learn and Prepare for any exam you want !

Write the balanced chemical equation for the following reaction:

Aluminium $+$ Copper chloride $\to$ Aluminium chloride $+$ Copper.