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What is stoichiomerty?

Updated: 6/29/2023
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Wiki User

15y ago

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Stoichiometry is a branch of chemistry that deals with the quantitative relationships between the amounts of reactants and products in a chemical reaction. It allows us to understand and predict the amount of substances involved in a reaction, based on the balanced chemical equation.

In stoichiometry, the coefficients in a balanced chemical equation represent the mole ratios between the different reactants and products. These coefficients indicate the relative number of molecules, atoms, or moles of each substance involved in the reaction.

Stoichiometry calculations involve converting between the mass, moles, or volume of substances participating in a reaction using the stoichiometric ratios provided by the balanced equation. This allows us to determine the amount of reactants needed, the amount of products formed, and to predict the limiting reactant or the excess reactant in a reaction.

Stoichiometry calculations can be used to answer questions such as:

How much product can be obtained from a given amount of reactant?

What mass of reactant is required to produce a specific amount of product?

How much of one reactant is needed to completely react with another reactant?

What is the stoichiometric ratio between reactants and products in a chemical reaction?

Stoichiometry is an essential tool in chemical analysis, synthesis, and understanding the quantitative aspects of chemical reactions. It allows chemists to design and optimize reactions, determine reaction yields, and ensure efficient use of reactants.

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muhammad rahman

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10mo ago
This answer is:
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Dr. Anshul Chawla

Lvl 1
9mo ago
It deals with the quantitative analysis of any chemical reaction.
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Noor Hoor

Lvl 5
11mo ago

Stoichiometry is a branch of chemistry that deals with the quantitative relationships between the amounts of reactants and products in a chemical reaction. It allows us to understand and predict the amount of substances involved in a reaction, based on the balanced chemical equation.

In stoichiometry, the coefficients in a balanced chemical equation represent the mole ratios between the different reactants and products. These coefficients indicate the relative number of molecules, atoms, or moles of each substance involved in the reaction.

Stoichiometry calculations involve converting between the mass, moles, or volume of substances participating in a reaction using the stoichiometric ratios provided by the balanced equation. This allows us to determine the amount of reactants needed, the amount of products formed, and to predict the limiting reactant or the excess reactant in a reaction.

Stoichiometry calculations can be used to answer questions such as:

How much product can be obtained from a given amount of reactant?

What mass of reactant is required to produce a specific amount of product?

How much of one reactant is needed to completely react with another reactant?

What is the stoichiometric ratio between reactants and products in a chemical reaction?

Stoichiometry is an essential tool in chemical analysis, synthesis, and understanding the quantitative aspects of chemical reactions. It allows chemists to design and optimize reactions, determine reaction yields, and ensure efficient use of reactants.

This answer is:
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Wiki User

15y ago

Stoichiometry is simply the math behind chemistry. Given enough information, one can use stoichiometry to calculate masses, moles, and percents within a chemical equation.

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Excelbassey Ekoro

Lvl 1
1y ago
Am very much happy that I found this page , is really helpful
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Anfac Abdi

Lvl 1
1y ago
Stoichiometry is the area of study that examinse the quantities of substance

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lenpollock

Lvl 15
1y ago

The maths behind chemical reactions.

Used to calculate moles masses etc. for a reaction to complete without any wastage.

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double trouble

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12mo ago

The study of relative amounts of substances in a chemical reaction is called stoichiometry

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How is stoichiomerty used to calculate amount of product from amount of reactant?

If we use the reaction Sulphuric Acid with Sodium Hydroxide. The reaction equation is H2SO4 + 2NaOH = Na2SO4 + 2H2O Note the molar ratios are 1:2::1:2 However if we have say 75 grams sulphuric acid. what masses are required by sodium hydroxide to make the reaction go to completion. Also what masses of sodium sulphate and water will produce. First we calculate the moles of H2SO4 . To do this we find the atomic masses. H x 2 = 1 x 2 = 2 S x 1 = 32 x 1 = 32 O x 4 = 16 x 4 = 64 2 + 32 + 64 = 98 So moles(H2SO4) = 75 / 98 = 0.7653moles ( equivalent to one(1) ratio). Hence moles (NaOH) = 0.7653 x 2 = 1.5306 ( equivalent to two(2) ratios) Hence masses of NaOH required for complete reaction is mass(g) = 1.5306 x (23 + 16 + 1) = 61.44 g. So total mass of reactants is 75 + 61.44 = 136.44. g As per the Law of conservation of Mass , the total mass of the products will be 136.44 g. This figure has to be apportioined for the product masses. Since there are two moles of water produced , then mass of water is Mass(H2O) =1.5306 x 18) = 27.5508 g Hence mass of sodium sulphate is 136.44 - 27.5508n = 108.892 g To verfiy this First calculate the Relative Molecular mass of Na2SO4 which is Na x 2 = 23 x 2 = 46 S x 1 = 32 x 1 = 32 O x 4 = 16 x 4 = 64 46 + 32 + 64 = 142 Mass(Na2SO4) = 0.7653 x 142 = 108.67 g ~ 108.892g The difference in these figures is due to estimations, and calculator errors. Hopefully you can see ,what stoichiometry is all about. !!!!!


Related questions

How is stoichiomerty used to calculate amount of product from amount of reactant?

If we use the reaction Sulphuric Acid with Sodium Hydroxide. The reaction equation is H2SO4 + 2NaOH = Na2SO4 + 2H2O Note the molar ratios are 1:2::1:2 However if we have say 75 grams sulphuric acid. what masses are required by sodium hydroxide to make the reaction go to completion. Also what masses of sodium sulphate and water will produce. First we calculate the moles of H2SO4 . To do this we find the atomic masses. H x 2 = 1 x 2 = 2 S x 1 = 32 x 1 = 32 O x 4 = 16 x 4 = 64 2 + 32 + 64 = 98 So moles(H2SO4) = 75 / 98 = 0.7653moles ( equivalent to one(1) ratio). Hence moles (NaOH) = 0.7653 x 2 = 1.5306 ( equivalent to two(2) ratios) Hence masses of NaOH required for complete reaction is mass(g) = 1.5306 x (23 + 16 + 1) = 61.44 g. So total mass of reactants is 75 + 61.44 = 136.44. g As per the Law of conservation of Mass , the total mass of the products will be 136.44 g. This figure has to be apportioined for the product masses. Since there are two moles of water produced , then mass of water is Mass(H2O) =1.5306 x 18) = 27.5508 g Hence mass of sodium sulphate is 136.44 - 27.5508n = 108.892 g To verfiy this First calculate the Relative Molecular mass of Na2SO4 which is Na x 2 = 23 x 2 = 46 S x 1 = 32 x 1 = 32 O x 4 = 16 x 4 = 64 46 + 32 + 64 = 142 Mass(Na2SO4) = 0.7653 x 142 = 108.67 g ~ 108.892g The difference in these figures is due to estimations, and calculator errors. Hopefully you can see ,what stoichiometry is all about. !!!!!