Question
For problems involving the determination of the limiting reagent, keep in mind two principles:
1. ____.
Answer
For problems involving the determination of the limiting reagent, keep in mind two principles:
1. All comparisons of reactants must be done in units of moles. Gram-to-gram comparisons will be useless and may even be misleading.
2. It is not the absolute mole quantities of the reactants that determine which reactant is the limiting reagent. Rather, the rate at which the reactants are consumed (the stoichiometric ratios of the reactants), combined with the absolute mole quantities determines which reactant is the limiting reagent.
Note: Figure 4.7 shows a reaction vessel that has significant amounts of reactants A and B, which react in equal amounts to produce product C. On the left, before the reaction, there is more reactant A than B. After the reaction is over, there is more product C but there is reactant A left over. Thus, reactant A is considered in excess, and reactant B is considered limiting.
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Formula unit represents ____.
____ represents the empirical formula of an ionic compound, since they do not form true molecules, rather a coordinated lattice.
____ weight is the term used for ionic compounds "molecular" weight as no molecule actually exists, its just a lattice structure.
____ compounds form from elements of similar electronegativity.
Atomic weight is ____.
____ is a weighted average of the masses of the naturally occurring isotopes of an element, not their weights.