A student discovers a bottle of NaOH with a partially destroyed label. How can t

Question

A student discovers a bottle of NaOH with a partially destroyed label. How can the concentration be determined without using a pH meter? the student can set-up a titration experiment, where a standardized NaOH solution is used to titrate HCl. the moles of H^+ and OH^- are equal at the equivalence point, therefore, the concentration of NaOH can be calculated. the student can set-up a titration experiment, where a standardized HCl solution is used to titrate the NaOH. the pH at the equivalence point should be 7 since this is a neutralization reaction, therefore, the concentration of NaOH is 1 times 10^-7 M. the student can set-up a titration experiment, where a standardized HCl solution is used to titrate the NaOH. the moles of H^+ and OH^- are equal at the equivalence point, therefore, the concentration of NaOH can be calculated.

Explanation / Answer

ANSWER IS A

EXPLANATION

HERE UNKNOWN CONCENTRATION IS NaOH WHICH IS TITRATED WITH NOWN CONCENTRATION OF HCl

ARE EQUAL AT THE EQUEALENT POINT =  the number of moles of base needed to react with all of the acid present is the same as the number of moles of acid present in the solution.

This reaction states that 1 molecule of NaOH will react with 1 molecule of HCl to produce 1 molecule of the salt, sodium chloride (NaCl), and 1 molecule of water. The chemical equation allows us to calculate the concentration of a solution of NaOH by titration with the base NaOH (where the concentration of HCl is accurately known).

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