Chemical equations balance

Yarroch, W. L. (1985). Students understanding of chemical equation balancing Journal of Research in Science Teaching, 22, 449 59. [Pg.192]

This is how we know how to balance chemical equations and work out the masses reacting together, because we know that equal molar masses contain the same numbers of particles. In a chemical equation like C + 02 —> C02, we always know that there will be one mole of carbon atoms reacting with one mole of oxygen molecules (02) to give one mole of carbon dioxide. Providing the chemical equation balances, any fraction of moles will also be true. One-tenth of a mole of carbon will require one-tenth of a mole of oxygen gas molecules (02), to make one-tenth of a mole of carbon dioxide gas (C02). [Pg.228]

Helpful Information Can be Derived from the Product Make Sure the Chemical Equation Balances Identify the Carbons That Belong to the Starting Materials within the Product Decide What the Original Nucleophile-Electrophile Pairs Might Have Been Consider Any Reasonable Proton Transfer Generate All the Possible Paths, Then Select the Best If It Does Not Make Sense, It s Wrong... [Pg.269]

In addition, the reversible gas phase water gas shift reaction (2.3) reaches very fast equilibrium at temperatures typical of a gasifier. The above chemical equations balance all the product (CO, CO2, H2O, H2) concentrations of the process. [Pg.45]

Recognizing Chemical Reactions Writing Chemical Equations Balancing Chemical Equations MiniLab 6.1 Energy Change... [Pg.895]

For each of the following unbalanced oxidation-reduction chemical equations, balance the equation by inspection, and identify which species is undergoing oxidation and which... [Pg.664]

Writing Chemical Equations Balancing Chemical Equations... [Pg.78]

List the reactant elements. List the product elements. Is this chemical equation balanced Na O + 2HOCI -... [Pg.294]

If an element occurs as a free element on either side of the chemical equation, balance it last. Always balance free elements by adjusting the coefficient on the free element. [Pg.212]

EXAMPLE 7.5 Balancing Chemical Equations Balance this chemical equation. Fe(s) + HCl(a(/) > FeCl3(a(j) + H2(g) ... [Pg.214]

Given an unbalanced chemical equation, balance it by inspection. [Pg.206]

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