In: Chemistry
A student prepared the three solutions listed in the table using graduated pipettes. Determine the initial molarities of H2O2 in each of the 3 solutions to the correct sig figs.
| Solution | Volume of 3.0% H2O2 (mL) | Volume of DI water (mL) | Volume of pH=7 buffer (mL) | Initial molarity H2O2 |
| 1 | 18.75 | 1.25 | 2.00 | |
| 2 | 12.50 | 7.50 | 2.00 | |
| 3 | 6.25 | 13.75 | 2.00 |