How much water should be added to 300 mL of 0.2 M solution of acetic acid ( ) to…

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

How much water should be added to 300 mL of 0.2 M solution of acetic acid (

K_a = 1.8 \times 10^{-5}

) to increase its degree of dissociation two times ? (1) 1.2 litre (2) 1.5 litre (3) 0.9 litre (4) 0.7 litre