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Sagot :
The pH will be 7.18.
What is buffer solution?
A buffer solution is an aqueous combination of a weak acid and either its conjugate base or base itself. When a modest amount of a strong acid or base is applied to it, the pH hardly changes at all.
Acidic Buffer: This substance is created when a strong base is combined with a weak acid and its salt.
Basic Buffer: This substance is created when a strong acid and a weak base with its salt are combined.
pH = pKa + log {[salt]- 0.002 moles HCl / [Acid]+ 0.002moles HCl
= 7.2 + log {0.1 -0.002/ 0.1+0.002}
pH = 7.18
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