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The heating of ${({NH}_{4})}_{2} {Cr}_{2} O_{7}$ produces another chromium compound along with $N_{2}$ gas. The change of the oxidation state of $Cr$ in the reaction is

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Important Questions on Stoichiometry

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation number of sulphur in

S_{8}

molecule is

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation states of

Cr

[Cr {(H_{2} O)}_{6}] {Cl}_{3}, [Cr {(C_{6} H_{6})}_{2}]

and

K_{2} [Cr {(CN)}_{2} {(O)}_{2} (O_{2}) ({NH}_{3})]

, respectively, are:

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

In acidic medium,

H_{2} O_{2}

changes

C r_{2} O_{7}^{- 2}

C r O_{5}

which has two

(- O - O -)

bonds Oxidation state of

C r

C r O_{5}

is:

MEDIUM

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

In the reaction of gold with aquaregia, oxidation state of Nitrogen changes from

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation number of sulphur is

+ 4

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

Oxidation number of potassium in

K_{2} O, K_{2} O_{2}

and

K O_{2},

respectively, is:

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The correct structure of tribromooctaoxide is:

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

What is the change in oxidation number of carbon in the following reaction?

{CH}_{4} (g) + 4 {Cl}_{2} (g) \to {CCl}_{4} + 4 HCl (g)

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The pair of compounds having metals in their highest oxidation state is

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

Two elements, X and Y have atomic numbers 33 and 17, respectively. The molecular formula of a stable compound formed between them is-

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

{CH}_{4} (g) + 4 {Cl}_{2} (g) \to {CCl}_{4} (1) + 4 HCl (g)

In the above reaction, the change of oxidation state of carbon is

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

Identify the compound in which phosphorus exists in the oxidation state of +1.

HARD

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation states of transition metal atoms in

K_{2} {Cr}_{2} O_{7}, {KMnO}_{4}

and

K_{2} {FeO}_{4},

respectively, are

x, y

and

z

. The sum of

x, y

and

z

is______

MEDIUM

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation state of sulphur in

H_{2} S_{2} O_{7}

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

Identify the incorrect statement.

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation number of nitrogen atoms in

{NH}_{4}, {NO}_{3}

are

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation number of the underlined atom in the following species is given. Identify the incorrect statement.

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The metal with the highest oxidation state present in

K_{2} {CrO}_{4}, {NbCl}_{5} and {MnO}_{2}

is-

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

The oxidation states of P atom in

P O C l_{3}, H_{2} P O_{3}

and

H_{4} P_{2} O_{6}

, respectively, are

EASY

Chemistry>Physical Chemistry>Stoichiometry>Oxidation Number

An element

X

shows

+ 3

, oxidation state in its compounds. Out of the four compounds given below, choose the incorrect formula for the element

X

The heating of NH42Cr2O7 produces another chromium compound along with N2 gas. The change of the oxidation state of Cr in the reaction is

Important Questions on Stoichiometry

Learn and Prepare for any exam you want !

The heating of ${({NH}_{4})}_{2} {Cr}_{2} O_{7}$ produces another chromium compound along with $N_{2}$ gas. The change of the oxidation state of $Cr$ in the reaction is