HARD

JEE Main

IMPORTANT

Earn 100

A sample of a metal chloride weighing $0.22 gram$ required $0.51 gram$ of ${AgNO}_{3}$ to precipitate the chloride completely. The specific heat of the metal is $0.057 Cal / gram .$ Find the molecular formula of the chloride if the metal is $M .$

Important Questions on Atomic Weight

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 10

A hydrated sulphate of a metal contained

0.0136 (112.28 + 35.5 x) = x

of the metal and

43.2 %

{SO}_{4}^{2 -}

by weight. Assuming the specific heat of the metal to be

0.242 Cal / g,

determine the formula of the hydrated sulphate.

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 11

$0.096 g$ of stannic chloride gave $25.84 mL$ of its vapour at $120 ° C$ and $350 mm$ pressure. If the chloride contains $54.6 %$ of chlorine and tin has the valency equal to $4,$ what will be the atomic weight of tin?

Round-off the answer to the nearest integer.

MEDIUM

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 12

A metal forms three volatile chlorides containing

23.6 %, 38.2 %

and

48.3 %

of chlorine respectively. The vapor densities of the chlorides are

74.6, 92.9

and

110.6

respectively. The specific heat of the metal is

0.055 Cal / g .

Find the exact atomic weight of the metal and formulae of its chlorides.

MEDIUM

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 13

{Cu}_{2} S

and

{Ag}_{2} S

are isomorphous. The percentages of sulphur in these compounds are

20.14 %

and

12.94 %

respectively. If the atomic weight of

Cu

63.5,

calculate the atomic weight of

Ag

MEDIUM

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 14

The natural titanium oxide, known as rutile and containing $39.95 %$ of oxygen, is isomorphous with ${SnO}_{2},$ known as cassiterite. Calculate the atomic weight of titanium.

Give the answer up to first place of decimal.

MEDIUM

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 15

The atomic weight of sulphur was determined by decomposing $6.2984 g$ of ${Na}_{2} {CO}_{3}$ with $H_{2} {SO}_{4}$ and weighing the resultant ${Na}_{2} {SO}_{4}$ formed. The weight was found to be $8.43 g .$ Taking the atomic weights of $C, O$ and $Na$ as $12.01, 15.99$ and $22.99$ respectively, calculate the atomic weight of sulphur.

Give the answer up to two places of decimal.

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 16

12.5843

grams

of a sample of

{ZrBr}_{4}

was dissolved and after several chemical steps, all the combined bromine was precipitated as

AgBr

. The silver content of the

AgBr

was found to be

13.21 g .

Calculate the atomic weight of

Zr

from this experiment.

(Ag = 107.868, Br = 79.904)

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 4 - Atomic Weight>PROBLEMS>Q 17

In a chemical determination of the atomic weight of vanadium,

2.8934 g

of pure

{VOCl}_{3}

was allowed to undergo a set of reactions as a result of which all the chlorine contained in this compound was converted to

AgCl

which weighed

7.18 g

. Calculate the atomic weight of vanadium.

(Ag = 107.868, Cl = 35.45, O = 16)

A sample of a metal chloride weighing 0.22 gram required 0.51 gram of AgNO3 to precipitate the chloride completely. The specific heat of the metal is 0.057 Cal/gram. Find the molecular formula of the chloride if the metal is M.

Important Questions on Atomic Weight

Learn and Prepare for any exam you want !

A sample of a metal chloride weighing $0.22 gram$ required $0.51 gram$ of ${AgNO}_{3}$ to precipitate the chloride completely. The specific heat of the metal is $0.057 Cal / gram .$ Find the molecular formula of the chloride if the metal is $M .$