It’s important because in a chemical reaction, the quantity of each element does not change (the law of conservation of mass). This means looking for stoichiometric coefficients for the reactants and products. So, the first step in chemical reaction calculations is balancing chemical equations. Our Chemical Reaction Calculator implements the above algorithm and helps you solve most chemical problems in seconds without resorting to time-consuming calculations. When solving chemical calculation problems using reaction equations, the following algorithm can be used:ġ) Write an equation for a chemical reaction and balance it.Ģ) Convert the problem data (mass, volume) to the amount of substance (moles).ģ) Find the amounts of reaction products according to the coefficients in the reaction equation.Ĥ) Convert the found amounts of substances into mass (volume) according to the condition of the problem. This means that the ratio of the amounts of reactants (in moles) is equal to the ratio of the corresponding coefficients in the reaction equation. Substances enter into chemical reactions in quantities proportional to the coefficients in the chemical equation. The chemical reaction equation shows which substances react with each other and in what quantities, as well as what substances are formed and how much of each can be obtained. The field with the limiting reactant is highlighted in pink. In addition, the amounts of unreacted reagents are calculated and the limiting reactant is determined. If you enter in the corresponding fields the amounts of reagents, either as number of moles or weight in grams, then, after pressing the ‘Enter’ key, you will get the amounts of reaction products (in moles and grams). To calculate the amount of reagents you need to take to get a certain amount of a given reaction product, enter that amount either as the number of moles or as its weight in grams in the corresponding field and then press the ‘Enter’ key. In case the original equation was unbalanced, the field with this equation is highlighted in light pink. In what follows is a more detailed syntax guide to our calculator.Īfter you click the ‘Calculate’ button, the equation is automatically balanced and a list of all reactants and reaction products involved in the chemical reaction appears. ) or the asterisk (*) precedes the water formula (e.g. H₂O) which then automatically converted to normal form. H 2O) or with the help of the ‘tiny’ numbers, like ₂ or ₅, (e.g. The indices are denoted using and html tags (e.g. You can enter a chemical equation manually or paste the equation copied from a web page or text document (including DOC or PDF file). The chemical reaction equation may include free electrons and electrically charged molecules (ions) as well as hydrated compounds. In addition, the amount of unreacted reagents and the limiting reactant are determined. It also calculates the amounts of reactants and reaction products in both moles and grams. a pollution of 1 gram of benzene in a certain amount of water converts to N A/78.11≈ 7.This online Chemical Reaction Calculator checks whether a given chemical equation is balanced and finds the appropriate stoichiometric coefficients. Using the above calculator you could find that e.g. Or 1 mole of a substance will contain Avogadro's number of that substance. The term " mole" is defined in that one mole of a substance with a molecular (or atomic) mass of one (1), will have a mass of 1 gram. It is defined to be 1/12 of the mass of one atom of carbon-12 and in older works is also abbreviated as "amu".Īlso, important in this field is Avogadro's number (N A) or Avogadro's constant (6.0221 x 10 23). In related terms, another unit of mass often used is Dalton (Da) or unified atomic mass unit (u) when describing atomic masses and molecular masses. Molecular mass or molar mass are used in stoichiometry calculations in chemistry. This Calculator has been tested on Internet Explorer version 6 only,įirefox might not show all fields correctly. For question or remarks please contact us. !!! Lenntech BV cannot be held responsible for errors in the calculation, Make sure you enter the molecule of crystallization at last (e.g. The calculator handles at most two different bracket levels. The molecular mass calculator will recognize the entered formula's, which are included in the list of organic compounds. Or you can choose by one of the next two option-lists, which contains a series of common organic compounds (including their chemical formula) and all the elements. This online calculator you can use for computing the average molecular weight (MW) of molecules by entering the chemical formulas (for example C3H4OH(COOH)3 ). Molecular Weight Calculator Molecular Weight Calculator Separation and Concentration Purification Request.Plant Inspection & Process Optimalisation.
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