Sodium peroxide (Na2O2) is used to remove carbon dioxide from (and add oxygen) t

Question

Sodium peroxide (Na2O2) is used to remove carbon dioxide from (and add oxygen) the air supply in spacecrafts. It works by reacting with CO2 in the air to produce sodium carbonate (Na2CO3) and O2. 2Na2O2(s)+2CO2(g) --->2Na2CO3(s)+O2(g)
What mass (in grams) of Na2O2 is necessary to consume 1.00 L CO2 at STP? Sodium peroxide (Na2O2) is used to remove carbon dioxide from (and add oxygen) the air supply in spacecrafts. It works by reacting with CO2 in the air to produce sodium carbonate (Na2CO3) and O2. 2Na2O2(s)+2CO2(g) --->2Na2CO3(s)+O2(g)
What mass (in grams) of Na2O2 is necessary to consume 1.00 L CO2 at STP? 2Na2O2(s)+2CO2(g) --->2Na2CO3(s)+O2(g)
What mass (in grams) of Na2O2 is necessary to consume 1.00 L CO2 at STP?

Explanation / Answer

2Na2O2(s)+2CO2(g)--->2Na2CO3(s)+O2(g)

find mol of CO2 first

1 L at STP of CO2

22.4 L at STP of CO2 = 1 mol o fCO2

then 1 L = 1/22.4 = 0.04464 mol of CO2

the ratio is 2 mol of CO2 per 2 mol of Na2O2

then 1:1

therefore0.04464  mol of CO2 need 0.04464  mol of Na2O2

that is in mass

mass = mool*MW = 0.04464 *77.98 = 3.4810272 g of Na2O2

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