What volume of oxygen gas react with 15.0 l of sulfur dioxide, if both gases are at 101.3 kPa and 125 ◦ C?
Dioxide sulfur reacts with oxygen to pro-duce sulfur trioxide. What volume of oxygen gas react with 15.0 l of sulfur dioxide, if both gases are 101.3 kPa and 125 ◦ C? 1. 3.75 L 2. 15.0 L 3. 7.50 L 4. 5.00 L 5. 30.0 L
First, make a balanced equation. so you know what is exactly what is happening. 2SO2 + O2> 2SO3 therefore, you know that sulfur dioxide, is twice the number of moles of oxygen gas. use PV = NRT 101.3 kPa = 1 atm, 15 = N (.0821) (273 +125) N = 459 moles therefore. 2295 moles are used. Again, use PV = nRT V = .2295 * .821 * (273 +125) V = 7.5 L (3)
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