Assume a solution is prepared by adding 1.0 x 10^-3 moles of a weak monoprotic acid (K_a = 2.0 x 10^-4) to enough water to give a liter of solution. If you want to compute the H₃O⁺ ion concentration with an error of 5% or less, you can legitimately ignore:

Question

Quizplus · Accepted Answer

The dissociation of water can be ignored because the concentration of H₃O⁺ from water is negligible compared to that from the weak acid. However, the $\Delta$ C term, which represents the change in concentration due to dissociation, should not be ignored as it significantly affects the H₃O⁺ concentration.

Assume a Solution Is Prepared by Adding 1 Δ\DeltaΔ C Term B) Neither the Dissociation of Water nor The 10-3

Assume a Solution Is Prepared by Adding 1 $\Delta$ C Term
B) Neither the Dissociation of Water nor The 10^-3