What are different types of stoichiometric problems? Write steps …

Question

What are different types of stoichiometric problems? Write steps involved in solving stoichiometric problems.

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Answer

i. Generally, problems based on stoichiometry are of the following types:

ii. Steps involved in problems based on stoichiometric calculations:

Write down the balanced chemical equation representing the chemical reaction.
Write the number of moles and the relative masses or volumes of the reactants and products below the respective formulae.
Relative masses or volumes should be calculated from the respective formula mass referring to the condition of STP.
Apply the unitary method to calculate the unknown factors) as required by the problem.

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	Law		Statement
i.	Law of definite proportions	a.	When two elements A and B form more than one compounds, the masses of element B that combine with a given mass of A are always in the ratio of small whole numbers
ii.	Gay Lussac’s law	b.	Equal volumes of all gases at the same temperature and pressure contain equal number of molecules
iii.	Law of multiple proportions	c.	When gases combine or are produced in a chemical reaction they do so in a simple ratio by volume, provided all gases are at same temperature and pressure
iv.	Avogadro’s law	d.	A given compound always contains exactly the same proportion of elements by weight