How would the calculated value of the K a of the unknown acid be affected (highe

ID: 633446 • Letter: H

Question

How would the calculated value of the Ka of the unknown acid be affected (higher, lower, or no change) if the following errors

occurred? Briefly explain why in each case.

The pH meter was incorrectly calibrated to read lower than the actual pH.

During the titration, several drops of NaOH missed the reaction beaker and fell onto the bench top.

When determining the dissociation constant for the unknown acid, the solution was actually 3.0 grams of acid per 1.5 liters

instead of 3.0 grams per liter as reported.

How would the calculated value of the molar mass of the unknown acid be affected (higher, lower, or no change) if the

following errors occurred? Briefly explain why in each case.

The pH meter was incorrectly calibrated to read lower than the actual pH.

During the titration, several drops of NaOH missed the reaction beaker and fell onto the bench top.

When determining the dissociation constant for the unknown acid, the solution was actually 3.0 grams of acid per 1.5 liters

instead of 3.0 grams per liter as reported.

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