Answer:
Explanation:
We can apply the henderson equation here to solve the problem . Here the
lactate ion and lactic acid are forming buffer solution .
pH = pKa + log X⁻ / XH ; here XA represents lactic acid and X⁻ represents lactate .
Given
3.7 = 3.86 + log X⁻ / XH
log X⁻ / XH = - 0.16
X⁻ / XH = 10⁻°¹⁶
= .69
ratio of concentration of lactate ion and lactic acid is .69