Olympiad workbookNSECRedox Reactions
The table below gives the results of three titrations carried out with 0.200 M HCl to determine the molarity of a given NaOH solution using phenolphthalein as indicator. NaOH was taken in the burette and HCl was taken in a conical flask for the titrations. aligned & Titration & No aligned V _ HCl ( mL ) V _ NaOH ( mL ) M _ NaOH moldm ⁻³ I 21.4 19.3 0.222 II 18.6 16.8 0.221 III 22.2 21.1 0.210 The actual molarity of t
Options
- ANumber of drops of phenolphthalein added to the titration flask was more in this titration
- BThe concentration of HCl was wrongly used as 0.250 M for the calculation of M _ NaOH
- CA few drops of NaOH solution were spilled outside the titration flask during titration
- DA few drops of the neutralized solution from titration II were left behind in the flask
Correct answer
C. A few drops of NaOH solution were spilled outside the titration flask during titration
Step-by-step solution
No Solution