Question

Chap 10.1 Data Analysis and Calculations

Need help calculating the rate of titrant

10.1 Chemical Equilibrium Titration 1 HCI + NaOH Sample 0.10 M HCL Titrant: 0.10 Nach 1. Determine the drop rate a.) Volume of 20 drops: 1.5 mL b.) Time interval for 20 drops: 15.03 seconds c.) Calculate rate of titration d.) pH when phenolphthalein color change: 6.8 Titration 2 Sample 0.10 MHC2H302 Titrant: 0.10 M NaOH 5. Determine the drop rate a.) Volume of 20 drops: 1.6 mL b.) Time interval for 20 drops: 14.75 seconds c.) Calculate rate of titration d.) pH when phenolphthalein color change: 9.5

Answer 1

Rate of titration is also called as flow rate (mL/sec)

1c)

rate of titration = 1.5 mL / 15.03 sec = 0.0998 mL/sec ~ 0.1 mL/sec

rate of titration = 0.1 mL/sec

5c)

rate of titration = 1.6 mL / 14.75 sec = 0.1084 mL/sec ~ 0.11 mL/sec

rate of titration = 0.11 mL/sec

12c)

rate of titration = 1.4 mL / 16.03 sec = 0.08734 mL/sec ~ 0.1 mL/sec

rate of titration = 0.1 mL/sec

The rate of titrant gives the amount added of the titrant becomes a linear function of time.

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