Question

What is the molarity of $0.2NNa{}_{2}C{O}_3$ solution?

• A. $0.1M$
• B. $0M$
• C. $0.4M$
• D. $0.2M$

Answer 1

Answer: (A)

Molarity $=$ Normality $÷n$ factor $=0.2÷2=0.1M$