The titration solutions are in a neutralized state whereas the concentrated acid

Question

The titration solutions are in a neutralized state whereas the concentrated acids and alkalis need to be neutralized before disposal. Therefore all excess acids and alkalis need to be treated with large amount of water and then poured into the drain. NaOH and HCl collected in the waste disposal containers should be neutralized using appropriate acid and base. In case of NaOH either acetic acid or dilute HCl can be used for neutralization. For HCl, dilute to 5% or less and neutralize using NaHCO3 to neutral pH . Rinsing Erlenmeyer flask with the acid might increase the moles of the substance used for the titration, because of which the final volume would vary. In order to avoid this error, the flask should be rinsed with distilled water. Adding water to the acid makes the color change more visible.

Explanation / Answer

190 ANAL0417: Using Volumetric Glassware to Measure, Dilute, and Titrate an Acid Solution 2. Regarding the safe disposal of discarded solutions in this experiment: () Briefly explain why excess HCl and NaOH solutions must be collected for treatment before disposal, but the titration solution from a completed titration can be safely poured into the drain, diluting with a large amount of running water (2) Suggest a detailed procedure for treating and safely disposing of the solution you collected in your "Discarded NaOH and HCl Solutions" beaker. it was appropriate for you to rinse your volumetric flask with distilled water prior 3. Briefly explainton for dilution, and also appropriate to add water to the acid solution in the to adding acid solution for dilution, and also a lask, but it was not correct procedure to obtain the initial acid solution in a wet beaker

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