What volume (l) of nh3 gas at stp is produced by the complete reaction of 7.5 g of h2o according to the following reaction?

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12-09-2022
Physics

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What volume (l) of nh3 gas at stp is produced by the complete reaction of 7.5 g of h2o according to the following reaction?

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tripatsingh039 tripatsingh039 · Answer 1 · 2022-09-15T13:19:06+02:00

volume of nh3 gas is 3.1 L

Utilizing stoichiometry, first convert g of H2O to mol of NH3. Six moles of water react to produce two moles of NH3 in the balanced reaction. H2O and NH3 have a mole ratio of 6:2, therefore 7.5 g H2O times (1 mol H2O / 18.02 g H2O) times (2 mol NH3 / 6 mol H2O) equals 0.14 mol NH3 Next, at STP, a mole of a gas takes up 22.4 L of space.

Produced NH3 volume equals 0.14 mol times (22.4 L / 1 mol) equals 3.1 L

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