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Sagot :
The pH can be determined by the base dissociation constant value (Kb). The pH of the solution after 15 mL of ammonia is added to the solution will be 10.26.
What is pH?
The pH of the solution can be given by the pOH value that is determined by the concentration and the base dissociation constant.
The balanced chemical reaction is given as,
HCl + NH₃ → NH₄Cl
The moles before reaction was 0.015L× 0.15M = 0.00225 moles and, 0.025 L × 1.00 M = 0.025 moles
The moles after reaction are 0.00225 moles - 0.025 moles = 0.02275 moles
pOH is calculated as,
pOH = 4.74 + log ( 0.00225 ÷ 0.02275 )
= 3.73
Further pH is calculated as,
pH = 14 - 3.73
= 10.26
Therefore, 10.26 is the pH of the solution.
Learn more about pH here:
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