32g of nitrogen combines with 40g of hydrogen and forms ammonia. find out the mass of ammonia formed and also name the law obeyed by the reaction.
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32g of nitrogen combines with 40g of hydrogen and forms ammonia. find out the mass of ammonia formed and also name the law obeyed by the reaction.
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mass of hydrogen -> 3 g
moles of hydrogen -> 3/2 = 1.5
mass of nitrogen -> 7 g
moles of nitrogen -> 0.25
now
N2 + 3H2 -> 2NH3
1 mole nitrogen -> 2 mole NH3
0.25 mole nitrogen -> 0.5 mole NH3
since there is Nitrogen as limiting reagent
therefore only 0.5 mole NH3 is formed and 0.75 mole of Hydrigen is left
so mass of 0.5 NH3 = (14 + 3)/2 = 17/2 = 8.5 g