Equilibrium Question 381
Question: The $ pH $ of a $ {10^{-9}}M $ solution of $ HCl $ in water is [UPSEAT 2000, 02]
Options:
A) 8
B) - 8
C) Between 7 and 8
D) Between 6 and 7
Show Answer
Answer:
Correct Answer: D
Solution:
As the solution is acidic, $ pH<7 $ . This is because $ [{H^{+}}] $ from $ H_2O,[{10^{-7}}M] $ cannot be neglected in comparison to $ {10^{-10}} $ M
