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Chemical formula

Example: Balanced Chemical Equations with Subscripts Water: $$\ce{H2O}$$ Carbon dioxide: $$\ce{CO2}$$ Iron(III) hydroxide (Rust reaction): $$\ce{4Fe + 3O2 + 6H2O -> 4Fe(OH)3}$$ Copper(II) sulfate pentahydrate: $$\ce{CuSO4 * 5H2O}$$ Chemical Formulas in Chemistry Chemical formulas are the symbolic representations of chemical substances. They show the elements present in a compound and the ratio in which the atoms of these elements combine. Chemical formulas are essential for understanding the composition, structure, and behavior of compounds in chemical reactions. 1. What is a Chemical Formula? A chemical formula uses symbols of elements and numerical subscripts to represent the composition of a substance. For example, the formula for water is: $$ \ce{H2O} $$ This indicates that each water molecule is made up of 2 atoms of hydrogen and 1 atom of oxygen. 2. Types of Chemical Formulas Empirical Formula Molecular Formula Structural Formula...
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Trends in the M2+ / M Standard Electrode Potentials

In this trends , you will observed that unique behaviour of copper . The standard electrode potential is positive . Other elements do not possess such kind of behaviour . This ability of copper do not allow it to liberate hydrogen gas while dissolving in acids . Only nitric and concentrated sulphuric acid are capable to produce hydrogen gas with copper . Hydration enthalpy can not able to balance it's high energy to transform from copper atom to copper ( ii ) ions . 




Mn , Zn and Ni are having more negative standard electrode potentials. 


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