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


Sahil M. A Level Biology tutor, GCSE Biology tutor, A Level Chemistry...
£18 /hr

Sahil M.

Degree: Medicine (Bachelors) - Manchester University

Subjects offered:Chemistry, Spanish+ 3 more

-Medical School Preparation-

“Hello! My name is Sahil and I am currently a medical student at the University of Manchester. I am really looking forward to tutoring you in Spanish, Chemistry, Biology or Maths as well as trying to help you during the difficult proce...”

£18 /hr

Prince J.

Degree: Medicine (Other) - Leeds University

Subjects offered:Chemistry, Science+ 2 more


“2nd year medical student! I'm excellent at working with kids! I am patient and will help students understand how to tackle long complicated seeming questions.”

MyTutor guarantee

£18 /hr

Youssef M.

Degree: Dentisty (Bachelors) - Birmingham University

Subjects offered:Chemistry, Maths+ 1 more


“Who am I?Hello everyone, I'm Youssef and I'm a dental student at the University of Birmingham. Since a young age I've had a passion for science, one which I hope I can pass on to you too. A passion which I continue through studying d...”

MyTutor guarantee

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

What affects the rate of reaction?

Give a reason why sulfur dioxide and nitrogen oxides are produced in petrol engines.

What's the difference between ionic and covalent bonds?

What is an acid?

View GCSE Chemistry tutors

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