(B) $1$. Calculate the molar mass of $CaCl_2$: $M = 40 + 2 \times 35.5 = 111 \ g/mol$. $2$. Calculate the number of moles of $CaCl_2$: $n = \frac{222

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(B) $1$. Calculate the molar mass of $CaCl_2$: $M = 40 + 2 \times 35.5 = 111 \ g/mol$. $2$. Calculate the number of moles of $CaCl_2$: $n = \frac{222 \ g}{111 \ g/mol} = 2 \ mol$. $3$. Since $1 \ mol$ of $CaCl_2$ contains $1 \ mol$ of $Ca^{2+}$ ions,$2 \ mol$ of $CaCl_2$ contains $2 \ mol$ of $Ca^{2+}$ ions. $4$. The number of $Ca^{2+}$ ions is $2 \times N_A$.

Class 11 Chemistry Some Basic Concepts of Chemistry The mole concept

Medium

Calculate the number of $Ca^{2+}$ ions in $222 \ g$ of anhydrous calcium chloride $(CaCl_2)$? (Atomic mass: $Ca = 40 \ u$,$Cl = 35.5 \ u$)

MHT CET 2025 All MHT CET

A
$N_{A}$
B
$2 \ N_{A}$
C
$3 \ N_{A}$
D
$4 \ N_{A}$

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

Some Basic Concepts of Chemistry

Subtopic

The mole concept

Previous Year

MHT CET 2025 Paper All MHT CET years →

Calculate the number of valence electrons in $4.2 \ g$ of $N_3^-$ ions in terms of $N_A$ ($N_A$ = Avogadro constant). (in $N_A$)

Medium

View Solution

The highest number of helium atoms is in

MediumNEET 2024

View Solution

The atomic weights of two elements $A$ and $B$ are $40$ and $80$ respectively. If $x \ g$ of $A$ contains $y$ atoms,how many atoms are present in $2x \ g$ of $B$?

Difficult

View Solution

If $3.01 \times 10^{20}$ molecules are removed from $98 \ mg$ of $H_2SO_4$,then the number of moles of $H_2SO_4$ left are:

MediumKCET 2017

View Solution

The number of moles of oxygen in $1 \ L$ of air containing $21 \%$ oxygen by volume,at standard temperature and pressure $(STP)$,is (in $mol$)

DifficultAIPMT 1995

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Calculate the number of $Ca^{2+}$ ions in $222 \ g$ of anhydrous calcium chloride $(CaCl_2)$? (Atomic mass: $Ca = 40 \ u$,$Cl = 35.5 \ u$)

Similar Questions

Calculate the number of valence electrons in $4.2 \ g$ of $N_3^-$ ions in terms of $N_A$ ($N_A$ = Avogadro constant). (in $N_A$)

The highest number of helium atoms is in

The atomic weights of two elements $A$ and $B$ are $40$ and $80$ respectively. If $x \ g$ of $A$ contains $y$ atoms,how many atoms are present in $2x \ g$ of $B$?

If $3.01 \times 10^{20}$ molecules are removed from $98 \ mg$ of $H_2SO_4$,then the number of moles of $H_2SO_4$ left are:

The number of moles of oxygen in $1 \ L$ of air containing $21 \%$ oxygen by volume,at standard temperature and pressure $(STP)$,is (in $mol$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module