4. Table 1 Volume of Acid (mL) Concentration of Acid used in dilution (M) UNL21: Lab Activity 2-Answer Document Moles of
Posted: Thu Jun 30, 2022 6:24 pm
- 4 Table 1 Volume Of Acid Ml Concentration Of Acid Used In Dilution M Unl21 Lab Activity 2 Answer Document Moles Of 1 (110.04 KiB) Viewed 126 times
6. In making up Acid 2 a student forgot to use a newgraduated cylinder and reused the one used to make Acid 1. How could this mistake affect the concentration of the resultantsolution?
8. What is the sensitivity of:
a) 10-mL graduated cylinder with markings every 0.2 mL?
b) 50-mL graduated cylinder used in the experiment?
4. Table 1 Volume of Acid (mL) Concentration of Acid used in dilution (M) UNL21: Lab Activity 2-Answer Document Moles of Acid in Solution (mol) Volume of H₂O used (mL) Calculated New Acid Concentration (M) Actual New Acid Concentration (from virtual lab) (M) Acid 1 10.0 11.6M 1 40.0 2.32M 2.32 x 0.116mol 10^-2m 2.32M Acid 2 10.0 2.32M 0.464M ol b) 50-mL graduated cylinder used in the experiment? (Hint: you may need to use the workbench.) 40.0 Acid 3 10.0 4.64 x 10^-3mol 40.0 0.464M 0.0928M a) 10-mL graduated cylinder with markings every 0.2 mL? Acid 4 10.0 0.0928 M 9.28 x 10^-4m ol 40.0 0.0186 M 0.464M 9.37M 11.2M Acid 5 10.0 0.0186 M 1.86 x 10^-4mo 1 40.0 0.00371 M 5. Based on the experimental method used briefly discuss any possible sources of error in this experiment. Compare your calculated values with the actual ones. Is any difference between them significant? 11.5M 6. In making up Acid 2 a student forgot to use a new graduated cylinder and reused the one used to make Acid 1. How could this mistake affect the concentration of the resultant solution? 7. What is meant by the 'sensitivity' of a measuring device? It is the ratio of change in output (or response) of the instrument to change in input or measured variable. A higher sensitivity indicates that the system can respond to even the smallest input. I 8. What is the sensitivity of: