CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

What will be the resultant pH when 200mL of an aqueous solution of HCl (pH = 2.0) is mixed with 300mL of an aqueous solution of NaOH (pH = 12.0) ?​


  1. 8.8

  2. 11.3

  3. 3.5

  4. 2.69


Solution

The correct option is B

11.3


pH of HCl solution = 2

[H+] = 1×102 M

Number of m mole of H+ in 200mL = 200×1×102 = 2

pH of NaOH solution 12.0

[OH] = 1×102M

Number of m mol of OH in 300mL = 300×1×102 = 3

After mixing total volume = 500mL

No. of m mol OH left = 3 – 2 = 1

Molarity of [OH] = 1500 = 0.2×102 = 2×103

pOH = 2.6990

 pH = 11.3010

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image