Answer:
Rank from most acidic to most basic is
Explanation:
This question is missing options.
Options are
To rank these solutions first calculate either pH or pOH of these solutions.
We will use pH as an indicator to rank these.
Relation between pH and pOH is
pH + pOH = 14 ................... Eq (A)
For pOH = 8.55
use equation A
pH + 8.55 = 14
pH = 5.45
For pH = 5.45
pH = 5.45
For 0.0023 M HCl
HCl is a strong acid. It will ionize 100% in aqueous solution and produce Hydronium Ion. Formula to calculate pH of 0.0023 M HCl is,
pH = - log (Molarity)
pH = - log (0.0023)
pH = - (-2.64)
pH = 2.64
For 0.0018 M KOH
KOH is a base. It will produce Hydroxide Ion in aqueous solution. First calculate pOH and convert it into pH.
pOH = - log (Molarity)
pOH = - log (0.0018)
pOH = 2.74
use equation A
pH + 2.74 = 14
pH = 11.26
Lower the pH more acidic the solution is. Rank from most acidic to most basic is
