Question

how many H2O should be added in 100 ml 0.3 M aqueous NaCl solution so that the resultant molarity a solution become 0.1 M?​

Answer 1

Answer:

200mL

Explanation:

FOR 100mL 0.3 M NaCl solution total mole will be 3 mole.

(0.3×1000)/100 = 3 mole

to convert 0.3 to 0.1 M WE NEED TO ADD 200mL MORE WATER TO IT

SO THAT TOTAL VOLUME WILL BE 300mL.

Now, (0.3×1000)/300 = 1 mole

and molarity will be 0.1M

Hope I helped you.

WISHING A BRAINLIEST TAG.