If 3.0 moles of x and 4.0 moles of y react according to the hypothetical reaction below, how many moles of the excess reactant will be left over at the end of the reaction? x + 2y xy2 2.0 mol x left over 1.0 mol x left over 2.0 mol y left over 1.0 mol y left over

Question

Chemistry

Antonio Fletcher

27 August, 10:49

If 3.0 moles of x and 4.0 moles of y react according to the hypothetical reaction below, how many moles of the excess reactant will be left over at the end of the reaction? x + 2y xy2 2.0 mol x left over 1.0 mol x left over 2.0 mol y left over 1.0 mol y left over

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Answers (1)

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Kasen Brennan · Answer 1

Answer is: 1.0 mol X left over.

Chemical reaction: X + 2Y → XY₂.

n (X) = 3,0 mol, excess reactant.

n (Y) = 4,0 mol, limiting reagent.

n - amount of substance.

from reaction: n (X) : n (Y) = 1 : 2.

n (X) : 4 mol = 1 : 2.

n (X) = 2 mol, that reacts.

excess of X: 3 mol - 2 mol = 1 mol.