Final answer:
To determine the pressure of the dry hydrogen gas in the buret, we need to consider the pressure of the water vapor in the buret and use Dalton's Law of Partial Pressures. Substituting the given values into the equation allows us to calculate the pressure of the dry hydrogen gas in the buret in atm.
Step-by-step explanation:
To determine the pressure of the dry hydrogen gas in the buret, we need to consider the pressure of the water vapor in the buret. The partial pressure of the water vapor can be calculated using Dalton's Law of Partial Pressures. Dalton's Law states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the individual gases.
In this case, the partial pressure of the water vapor can be calculated by subtracting the pressure of the water bath from the atmospheric pressure:
Partial pressure of water vapor = Atmospheric pressure - Pressure of water bath
To convert the pressure of the dry hydrogen gas in the buret from inches of Hg to atm, we can use the conversion factor 1 atm = 29.92 inches of Hg.
Pressure of the dry hydrogen gas in the buret = (Atmospheric pressure - Partial pressure of water vapor) / Conversion factor
Substituting the given values into the equation:
Pressure of the dry hydrogen gas in the buret = (29.68 - (15.89/29.92)) / 29.92
Solving the equation gives the pressure of the dry hydrogen gas in the buret in atm.