A sample containing 0.010 mol of anhydrous calcium nitrate is heated strongly until it fullydecomposes.All the gas produced is collected and its volume measured at room conditions.What is the volume of gas produced?
Question
A sample containing 0.010 mol of anhydrous calcium nitrate is heated strongly until it fullydecomposes.All the gas produced is collected and its volume measured at room conditions.What is the volume of gas produced?
Solution
The decomposition of calcium nitrate can be represented by the following balanced chemical equation:
2Ca(NO3)2(s) → 2CaO(s) + 4NO2(g) + O2(g)
From the stoichiometry of the reaction, 2 moles of calcium nitrate produce 4 moles of nitrogen dioxide and 1 mole of oxygen, a total of 5 moles of gas.
Therefore, 0.010 moles of calcium nitrate will produce 0.010 * 5/2 = 0.025 moles of gas.
At room temperature and pressure (RTP), 1 mole of any gas occupies 24.0 dm^3.
Therefore, the volume of gas produced is 0.025 * 24.0 = 0.6 dm^3.
Similar Questions
a solution was made by dissolving 8.2g of calcium nitrate to give 2 litres os solution. determine the concentration of nitrate ions in moles per litre
8.2 grams of calcium nitrate is decomposed by heating according to the equation2Ca (NO3 )2 _____ 2CaO +4NO2 + O2Calculate the following:(a) Volume of nitrogen dioxide obtained at STP(b) Mass of CaO formed[Atomic weights: Ca –40 , N—14, O—16][4]
A sample of Nitrogen gas has 1.70 mols and occupies 3800mL at 25C. What volume will it occupy if it now has 2.60mols?A.5811.76 LB. 1.16 LC. 5.81 LD. 2.48 L
Determine o incremento de energia ΔΔU da energia interna de 5kg de gás Nitrogênio aquecido de 10ºC até 130ºC, supondo o volume constante. Os calores específicos do gás N2 são cp=0,248 kcal/kgK e cv=0,177 kcal/kgKAssinale a alternativa correta: A 106kcal B 150kcal C 230kcal D 256kcal
If the pressure exerted by a gas at 25oC in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?A.0.055 molB.0.0069 molC.0.0062 molD.0.62 mol
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.