Question

If 10 mL of 0.1 M aqueous solution of NaCl is divided into 1000 drops of equal volume, what will be the concentration of one drop?

• A. 0.10 M
• B. 0.01 M
• C. 0.001 M
• D. 0.0001 M

Answer 1

The correct option is A 0.10 M

Total volume, V =10 mL 10

Volume of one drop $=\frac{10}{1000}mL$

($\because$This volume has been divided into 1000 drops)

$MV=1000MV$

(for solution) (for drops)

$0.1\times 10=1000\times M^{\prime }\times \frac{10}{1000}$

$M^{\prime }=0.1$

Alternative Concentration is intensive. the property, i.e., remains the same if a solution is divided into n equal parts.

Hence, the correct option is $A$