Complete the given chemical reaction: CuSO 4 aq + Fe s → _____ + _____ . Name the type of reaction.

The given equation represents the reaction of iron with copper sulphate solution. The chemical equation is as follows: CuSO 4 aq + Fe s → FeSO 4 ( aq ) + Cu ( s ) It is a displacement reaction. Iron is being more reactive in the activity series of metals displaces copper ions from an aqueous solution of copper sulphate. In this reaction, metallic iron is converted into ferrous ion Fe 2 + and cupric ion Cu 2 + is converted into metallic copper. A brown coating of copper is formed on the surface of iron and the colour of the copper sulphate solution changes from blue to light green.

The combining capacity of an element is called valency. The valence electrons determine the combining capacity of an atom. The number of bonds that an atom can form as part of a compound is expressed by the valency of the element. For example- The valency of hydrogen is 1, oxygen is 2, carbon is 4, etc.

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Sodium ion is a (cation/anion).

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Important Questions on Atoms and Molecules

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Science>Chemistry>Atoms and Molecules>Ions

Our teeth enamel is made up of _____.

MEDIUM

Science>Chemistry>Atoms and Molecules>Ions

Isotopes of an element contains

HARD

Science>Chemistry>Atoms and Molecules>Ions

The half-life of a radioisotope is

4

hours. If the initial mass of the isotope was

200 g

, the mass remaining after

24

hours undecayed

EASY

Science>Chemistry>Atoms and Molecules>Ions

Taking into consideration the relationship in the first pair, complete the second pair:

$2 H_{2} + O_{2} \to 2 H_{2} O$ : Combination reaction: $2 HgO \to 2 Hg + O_{2}$ : _____.

EASY

Science>Chemistry>Atoms and Molecules>Ions

Hydrogen contains three types of atoms (

{}_{1}^{1}H

protium,

{}_{1}^{2}H

deuterium,

{}_{1}^{3}H

tritium). These atoms are

EASY

Science>Chemistry>Atoms and Molecules>Ions

The reaction of the iron nail with copper sulphate solution is a _____ reaction.

MEDIUM

Science>Chemistry>Atoms and Molecules>Ions

Which one of the following is cation

MEDIUM

Science>Chemistry>Atoms and Molecules>Ions

The colour of

{NO}_{2}

and

PbO

formed when lead nitrate is heated are:

MEDIUM

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The following is the correct decreasing order of the ionic radii-

EASY

Science>Chemistry>Atoms and Molecules>Ions

The number of protons in one atom of an element

X

8

. What will be the number of electrons in its ion

X^{- 2}

MEDIUM

Science>Chemistry>Atoms and Molecules>Ions

The reaction of iron nail with copper sulphate solution is _____ reaction.

EASY

Science>Chemistry>Atoms and Molecules>Ions

A positively charged body has

MEDIUM

Science>Chemistry>Atoms and Molecules>Ions

Complete the given chemical reaction:

${CuSO}_{4} (aq) + Fe (s) \to_____+_____$ .

Name the type of reaction.

MEDIUM

Science>Chemistry>Atoms and Molecules>Ions

A substance on treatment with dilute

H_{2} {SO}_{4}

liberates a colourless gas which produces (i) turbidity with baryta solution and (ii) turns acidified dichromate solution green. The reaction indicates the presence of

MEDIUM

Science>Chemistry>Atoms and Molecules>Ions

Which of the following reaction does not takes place? State the reason.

(i) ${FeSO}_{4} + Mg \overset{}{\to} {MgSO}_{4} + Fe$