Final answer:
The corrected pressure for the hydrogen gas produced in the lab, with atmospheric pressure at 752.8 mmHg and room temperature at 23 degrees C, is 731.7 mmHg. Therefore correct option is A
Step-by-step explanation:
The student is attempting to determine the corrected pressure for hydrogen gas produced in a lab setting. To calculate this, the vapor pressure of water at 23 degrees Celsius, which is 21.1 mmHg, must be subtracted from the atmospheric pressure measured, 752.8 mmHg.
Therefore, the corrected pressure for the hydrogen gas would be 731.7 mmHg, which corresponds to answer choice A. This calculation assumes that the total pressure measured is the sum of the partial pressure of hydrogen and the vapor pressure of water at the given temperature.