What is stoichiometry, Chemistry

Assignment Help:

Q. What is Stoichiometry?

Ans.

As you know a chemical equation is like a recipe. Each of the different ingredients combine in certain ratios to form the end product. The ratios of the different ingredients are correct when a reaction is balanced. The aspect of chemistry that deals with the quantitative relationships among reactants and products is called stoichiometry. The mole concept is used for solving problems in stoichiometry.

Balanced equations are very important because they provide the mole ratios. These ratios can be used to convert quantities of reactants or products to moles, grams, or number of molecules.

Note the ratios of the substances in the synthesis of water:

2 H2 + O2 -> 2 H2O

This equation indicates that for every two moles of hydrogen (H2), there is one mole of oxygen (O2) and 2 moles of water (H2O).

Therefore, the molar ratio of hydrogen to oxygen to water is 2:1:2.

When doing a stoichiometry problem, the number of moles of the starting material is converted to the number of moles of the desired substance, using the mole ratio.

How many moles of oxygen are needed to react with 8 moles of hydrogen?

The ratio of hydrogen to oxygen as shown in the equation is 2:1.

Therefore, the amount of oxygen needed to react with 8 moles of hydrogen is 4 moles of oxygen.

Remember: Only use the balanced reaction to attempt these calculations!


Related Discussions:- What is stoichiometry

Arhenious concept, Explain Arhenious theory with utility and limitation?

Explain Arhenious theory with utility and limitation?

Atom, how many type of atom?

how many type of atom?

Tests for acetone - legal test, Tests for acetone - Legal test (a) Lega...

Tests for acetone - Legal test (a) Legal's test: while a few drops of prepared freshly sodium nitroprusside and sodium hydroxide solution are added or mixed to an aqueous solut

Explain borazole, Borazole is very stable because it is aromatic; each nitr...

Borazole is very stable because it is aromatic; each nitrogen contributes two p electrons and each boron contributes zero electrons, for a total of six p electrons in the aromatic

Difference between dna and rna, Difference between DNA and RNA ...

Difference between DNA and RNA DNA RNA DNA has a double helix structure. RNA comprises a single helix structure.

What is the packet of energy called, What is the packet of energy called: ...

What is the packet of energy called: (1) Electron          (2) Photon    (3) Positron                 (4)Proton Ans:  Photon

What is the charge on edta ligand?, EDTA charge is 4.and it is react with m...

EDTA charge is 4.and it is react with many compound to form other compounds

Compounds containing nitrogen, which compounds will dissolve in alkaline so...

which compounds will dissolve in alkaline solution after it has undergone reaction with hinsberg reagent

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd