Steve C. answered • 09/21/15

Tutor

5.0
(641)
Steve C. Math & Chemistry Tutoring

The way to solve this problem is to figure out how many moles of water, carbon dioxide, and sulfur dioxide are formed from the reaction. Then determine the empirical formula of the compound by finding the lowest whole number ratio of the components. ( C

_{x}H_{y}S_{z}) Then determine the molecular formula using the given molar mass.The moles of water can be calculated by dividing the given mass by the gram formula mass of water.

The moles of carbon dioxide can be found using the ideal gas law equation PV=nRT. The pressure must be corrected for the vapor pressure of water (Dalton's Law of partial pressure). The Kelvin temperature is obtained by adding 273.15 to the Celsius temperature.

The moles of sulfur dioxide can be obtained from the titration results. Sulfur dioxide reacts with water to form sulfurous acid (H

_{2}SO_{3}). 2 moles of sodium hydroxide are required to completely react with each mole of sulfurous acid.Once you have the molecular formula you can write the balanced equation and determine the moles of oxygen required in the reaction. The moles can be converted to liters using the conversion factor that 1 mole of an ideal gas occupies 22.4 liters at STP

Steve C.

When you collect the carbon dioxide by water displacement, part of the pressure of the gas in the container will be due to the presence of water vapor. To find the pressure due to carbon dioxide, subtract the water vapor pressure from the total atmospheric pressure given.

Report

09/22/15

Itachi S.

09/21/15