Q.

Lemon juice normally has a pH of 2. If all the acid in the lemon juice is citric acid and there are no citrate salts present, then what will be the citric acid concentration [HCit] in the lemon juice ? (Assume that only the first hydrogen of citric acid is important)HCit ⇌  H+ + Cit-,     Ka=8.4 × 10-4  mol  L-1

see full answer

Want to Fund your own JEE / NEET / Foundation preparation ??

Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*
An Intiative by Sri Chaitanya

a

8.4 × 10-4 M

b

4.2 × 10-4 M

c

16.8 × 10-4 M

d

11.9 × 10-2 M

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

H+ = KaC,  pH=2,    ∴    H+ = 10-2 M10-2 = KaC10-4  =  8.4 × 10-4 × C ∴            C = 11.9 ×  10-2 M
Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

+91
whats app icon