Question

Calculate Molarity of a 63% w/w $HN{O}_3$ solution if density is 5.4 g/mL :

• A. 14 M
• B. 12 M
• C. 10 M
• D. 8 M

Answer 1

Answer: (A)

$M=\frac{\%w.w\times d\times 10}{M_{solute}}=\frac{63\times 1.4\times 10}{63}=6.5$