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. The calculator may continue to prompt you with a message " Number of atoms per molecule has to be a positive integer." This is because this calculator uses atomic masses as listed in the IUPAC atomic weight data, and the values you're using may be slightly different.This online Chemical Reaction Calculator checks whether a given chemical equation is balanced and finds the appropriate stoichiometric coefficients. We recommend you utilize the Atoms per molecule field to calculate the molecular weight, but you're free to manually enter any value in the molecular weight field. This calculator can support up to five elements per reactant or product. For example, for H 2 O \text O as its unit. To evaluate the molecular weight, we need to know each element in the compound along with the number of atoms per molecule. Then enter the coefficients, the number of moles, and the mass in the corresponding fields. In this calculator, first set Select calculation type to Calculate molar ratio, moles, and mass. It is possible to calculate the mass of each reactant and product required if you know the molar ratio, number of moles required, and molecular weight of each reactant and product. You will get the resultant molar ratio at the very bottom as a table. In this calculator, first set Select calculation type to Calculate molar ratio and moles and carefully enter the coefficients or the number of moles in the corresponding fields. Conversely, if you know the number of moles needed, you can compute the molar ratio. Once you have the molar ratio, you can determine the number of moles of each reactant and product required to complete the reaction. Then carefully enter the coefficients of each reactant and product in the corresponding Coefficient field. In this molar ratio calculator, first set Select calculation type to Calculate molar ratio. Keep in mind that in all these cases, the resultant molar ratio is displayed as a table at the very bottom of the calculator.Ĭalculating the molar ratio from a balanced reaction is the most straightforward method. Additionally, there are three types of calculations to choose from, explained below. This online molar ratio calculator can handle up to five reactants and five products.
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