Question

How do you balance acid base reaction?

Answer 1

Hint: An acid base reaction is a chemical reaction that occurs between an acid and a base. One balances a chemical equation by changing the scalar number for each chemical formula. Simple chemical equations can be balanced by inspection, that is, by trial and error. Another technique involves solving a system of linear equations.

Complete step by step answer:
The law of conservation of mass dictates that the quantity of each element does not change is a chemical equation or reaction thus each side of the chemical equation must represent the same quantity of any particular element. Likewise, the charge is conserved in a chemical reaction. Therefore, the same charge must be present on both sides of the balanced equation.
Acids can be defined as substance that dissolve in water to produce $\text{H}$ ions whereas substances that dissolve in water to produce $\text{O}{{\text{H}}^{-}}$ ions are bases. Acids are chemical compounds that show a corrosive action on metals and turn blue litmus red. Bases are chemical compounds that are soapy to the touch and turn red litmus blue. When mixed, acids and bases neutralize one another and produce salts, substances with a salty taste and none of the characterized properties of either acids or bases.
$\underset{\text{acid}}{\mathop{\text{HCl}}}\,+\underset{\text{base}}{\mathop{\text{NAoH}}}\,\to \underset{\text{salt}}{\mathop{2\text{NaCl}}}\,\text{(}aq\text{)}+\underset{\text{water}}{\mathop{{{\text{H}}_{2}}\text{O}}}\,$
You have to observe the proper stoichiometry. When we write (aq) beside a reagent we mean the aquated sodium chloride. $\text{N}{{\text{a}}^{+}}2\text{C}{{\text{l}}^{-}},$ ions are surrounded by several water molecules.
For reagents that deliver several equiv's of acid or base, we change the stoichiometry appropriately.\[\text{Acid}+\text{base}\to \text{salt}+\text{water}\].

Additional Information:
 An acid alkali reaction is a special case of an acid-base reaction, where the base used is also an alkali. When an acid reacts with an alkali salt the product is a metal salt and water. Acid alkali reactions are also neutralization reactions. With weak bases addition of acid is not quantitative because a solution of weak base is a buffer solution. A solution of a weak acid is also a buffer solution. When a weak acid reacts with a weak base an equilibrium mixture is produced. An acid base reaction is the removal of hydrogen ions from the acid and its addition to the base. The reception of proton by a base produces its conjugate acid, which is the base with a hydrogen ion added.

Note: When you balance a chemical equation, you change coefficients. You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation you add these whole number multipliers to make sure that there are the same number of atoms on each side of the arrow. Water is amphoteric that is, it can act as both acid and a base. The coefficients next to the symbols and formulae of entities are the absolute values of the stoichiometry numbers. The method of inspection can be outlined as putting a coefficient of 1 in front of the most complex formula and putting the other coefficients before everything else such that both sides have the same number of each atom.