Which acid is stronger? Plz?

Solution A contains 2.00 x 10^(-4) mol of an acid in 90.0 mL of water. Solution B contains 4.25 x 10^(-5) mol of a second acid in 5.00 mL of water. Both solutions have a pH of 2.65.

Which acid is stronger, A or B?

Thnx for help ! Best answer guaranteed!

Answer:
pH = -10 log [H+]

c(H+) = 10^(2.65 / -10)
= 0.5433 mol / L

c1 = 0.5433 mol / L
V1 = 0.09 mol
n(H+)1 = 0.0489 mol

c2 = 0.5433 mol / L
V2 = 0.005 mol
n(H+)2 = 0.00272 mol

n(H+)1 / n(H+)2 = 1.80

2.00 x 10^(-4) / 4.25 x 10^(-5) = 4.705

I think Acid B is stronger.i know my working leads nowhere though...
write it on a piece of paper and touch the two. The one which seems to be the hotter is the stronger one.
Find the concentrations (moles divided by volume)...

Concentration of B is higher, but both solutions have the same acidity (pH), so A is the stronger acid because you need less of it.

The answers post by the user, for information only, FunQA.com does not guarantee the right.



More Questions and Answers:
  • Organic chemistry problem?
  • Can someone draw bond line structures (2D)for NH4+,HNO3,KNO3,P4O10?
  • For each bond tell whether it is nonpolar or polar. Also state the direction of the dipole. C-N, O-H, S-Br?
  • Does anyone know where to get arsenic water or carbolic acid?
  • What is the difference between mixtures and compounds?
  • Which agency has the final say as to whether a substance is hazardous or not.?
  • Plz help - org. chem lab...?!!?
  • Relevant but Long, Hard Lab Questions Heat of Acid-Base Neutralization (part 2)?
  • How can we distinguish CH3NHCH3 from CH3(CH2)5CH2NH2?