What is the quantity of a reactant that is more than enough to react with a limiting reagent?

Answer 1

#"The reagent in excess.............."#

Dioxygen is the reagent in excess, especially in combustion reactions. We assume full combustion and dioxygen is present in quantity:

#C_6H_14(l) + 19/2O_2(g) rarr 6CO_2(g) + 7H_2O(l) +Delta#
This is balanced with respect to mass and charge, as indeed it must be if it purports to represent reality. The energy evolved from reaction may also be calculated quantitatively. Again, this is reasonable because we make a definite quantity of #C=O# and #O-H# bonds, and break a definite quantity of #C-H#, #C-C#, and #O=O# bonds.
In the internal combustion, and diesel engines (especially), this assumption of complete combustion is UNJUSTIFIED, and modern engines still produce quantities of the products of incomplete combustion, #CO#, and #C#, as particulate carbon or soot.
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Answer 2

The quantity of a reactant that is more than enough to react with a limiting reagent is referred to as an excess reactant.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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