Question

the concentration of hydrogen ion in a sample of soft drink is 3.8×10^_3M.what is its pH?

Answer 1

conc = 3.8×10^-3
pH = log(concentration)
pH = -log(3.8×10^-3)
pH= -log(10^-3)-log(3.8)
pH= 3-log(3.8)
pH = 3-0.58
pH = 2.42

Answer 2

$\huge\boxed{\underline{\mathcal{\red{A}\green{N}\pink{S}\orange{W}\blue{E}\purple{R}}}}$

• ❤..pH= -${log[3.8×10^-3]}$
• = _ ${{log[3.8]+log[10^-3]}}$
• _ ${{(0.58)+(-3.0)} = -{_2.42} =2.42}$
• Therefore, the PH of the soft drink is2.42 and it can be inferred that is acidic