If 20 kg of calcium carbonate was reacted with excess sodium chloride in the following reaction (2NaCl+CaCo3-->Na2Co3+CaCl2) what is the maximum mass of sodium carbonate that could be made?

1)Always write out the reaction first;


2)Now underneath calculate the Relative Formula Mass using a periodic table for each of the compounds. 

CaCo3=100/ Na2Co3=106

3)Now always write out the formula you intend to use;

Moles= Mass of substance/ Relative formula mass

4)Always convert everything to grams so 20kg=20000g

Moles= 20 000/100

Moles= 200

5)Ratio of CaCo3 toNa2Co3 is 1:1 as seen in equation

so 200 moles= mass/ 106

therefore 200x106= mass

21200 mass in grams 

or 21.2 kg 

Andrew R. Mentoring -Medical School Preparation- tutor, Mentoring .UK...

1 year ago

Answered by Andrew, a GCSE Chemistry tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist


£36 /hr

Hannah S.

Degree: Medicinal Chemistry and Pharmacology (Masters) - Liverpool University

Subjects offered: Chemistry, English Language+ 3 more

English Language
-Personal Statements-

“I'm currently studying medicinal chemistry and pharmacology at the University of Liverpool as part of an 'integrated masters' course designed to fast track students interested in a chemistry as a profession or continuing study to a PhD...”

£18 /hr

Tom T.

Degree: Natural Sciences (Masters) - Durham University

Subjects offered: Chemistry, Science+ 4 more

Further Mathematics

“About Me: I am a student at Durham University studying Natural Sciences, specifically Maths and Chemistry. I have always been keen to help others understand key scientific and mathematical concepts and I hope to be able to do the same...”

£18 /hr

Karishma D.

Degree: Medicine (Bachelors) - Imperial College London University

Subjects offered: Chemistry, Maths+ 3 more

-Personal Statements-
-Medical School Preparation-

“Hi guys, I'm a first year medical student at Imperial College London. I chose this degree because it indulges my passion for science whilst allowing me to interact with people, putting what I learn in the lecture theatre into practise...”

About the author

Andrew R.

Currently unavailable: for regular students

Degree: Medicine (Other) - Sheffield University

Subjects offered: Chemistry, Biology+ 1 more

-Medical School Preparation-

“Hi my names is Andrew and i'm a second year medical student at the University of Sheffield. I acheived an A* A A in Biology, Chemisty and Maths respectivly in my A-levels. I have a passion for teaching and used to tutor stuents in low...”

MyTutor guarantee

You may also like...

Posts by Andrew

Does the UKCAT require preparation?

If 20 kg of calcium carbonate was reacted with excess sodium chloride in the following reaction (2NaCl+CaCo3-->Na2Co3+CaCl2) what is the maximum mass of sodium carbonate that could be made?

What is medical school like in terms of work load?

Other GCSE Chemistry questions

Why can sodium chloride conduct electricity in the molten state but no in the solid state?

What is the difference between ionic, covalent and metallic bonding?

What are the products of the reaction between an acid and a base?

How is crude oil separated into fractions?

View GCSE Chemistry tutors


We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss