4. In an experiment to determine the concentration of an HCCI sample of unknown concentration, 0.1 M NAOH solution was prepared in the first step. Then, 50 mL of NaOH prepared as 0.1 and 5 drops of methylorange indicator were added to a 250 mL and titrated with H2C204 prepared as 0.05 M. The turning point observed when 26 mL of H2C204 was consumed in the titration process. In the second step, 50 mL of a non-concentrated HCl

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4. In an experiment to determine the concentration of an HCI
sample of unknown concentration, 0.1 M NaOH solution was
prepared in the first step. Then, 50 mL of NaOH prepared as 0.1 M
and 5 drops of methylorange indicator were added to a 250 mL flask
and titrated with H2C204 prepared as 0.05 M. The turning point was
observed when 26 mL of H2C204 was consumed in the titration
process. In the second step, 50 mL of a non-concentrated HCI
solution and 5 drops of phenolphthalein solution were added to a
250 mL flask and titrated with the adjusted NaOH solution.
Calculate the concentration of an HCI sample with an unknown
concentration, since it is determined that 16 mL of NaOH solution
was consumed after titration.
Transcribed Image Text:4. In an experiment to determine the concentration of an HCI sample of unknown concentration, 0.1 M NaOH solution was prepared in the first step. Then, 50 mL of NaOH prepared as 0.1 M and 5 drops of methylorange indicator were added to a 250 mL flask and titrated with H2C204 prepared as 0.05 M. The turning point was observed when 26 mL of H2C204 was consumed in the titration process. In the second step, 50 mL of a non-concentrated HCI solution and 5 drops of phenolphthalein solution were added to a 250 mL flask and titrated with the adjusted NaOH solution. Calculate the concentration of an HCI sample with an unknown concentration, since it is determined that 16 mL of NaOH solution was consumed after titration.
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