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How does the reaction between calcium oxide, and nitric acid demonstrate the principle of stoichiometry?

Answer 1

Calcium nitrate and water are produced in a 1:2 molar ratio, following the balanced chemical equation: (CaO + 2HNO_3 \rightarrow Ca(NO_3)_2 + H_2O). This illustrates the stoichiometric relationship between reactants and products.

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Answer 2

Caleb Adams

#CaO(s) + 2HNO_3(aq) rarr Ca(NO_3)_2(aq) + H_2O(l)#

For every reactant particle, is there a corresponding product particle? Has charge been conserved in the reaction as written?

Chemical reactions conserve (i) mass, and (ii) charge absolutely, and invariably. And so if your reaction does not stoichiometrically balance, then it is not a valid representation of chemical reality.

The given reaction is an example of an #"acid-base reaction"#. Which reagent is the acid, and which is the base?

Note that #Ca# metal is an #"alkaline-earth"#, from #"Group 2"# of the Periodic Table, and normally forms #Ca^(2+)# upon oxidation. Its hydroxide salt is thus #Ca(OH)_2#.

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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.