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Robinlynn228
21.04.2020 •
Chemistry
Please help! use what you know of limiting reactants
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Ответ:
Limiting reatant refers to a reatant that is used completely as the result its hinder the reaction to continue further .
In your problem you have to calculate number of moles for each reatant and the reatant having less moles is then limiting reatant . Then you will use it with its ratio to calculate t the moles of required . Then convert moles to grams
Ответ:
39.4 g
Explanation:
Of the 137.33 grams per mole of PCl₃, 106.36 grams of it are chlorine, about 77.4%. Thus the mass of chlorine in the 50.9 grams of PCl₃ will be ...
(50.9 g)(0.7745) ≈ 39.4 g
39.4 g of chlorine reacted with the available phosphorus to produce 50.9 g of phosphorus trichloride.
__
P = 30.974 g/mol
Cl = 35.453 g/mol
Comment on answer choices
Since our answer doesn't match any of the offered choices, we assume there is a typo in the question. The best choice of those shown here is 35.4 g. A little more than 3/4 of the product weight is chlorine, so the answers 66.4 and 17.7 or lower do not make any sense.