This is an acid-base reaction (neutralization): NH4Cl is an acid, NaOH is a base.
Input interpretation
NH4Cl + NaOH → NH3 + H2O + NaCl
Ammonium chloride sodium hydroxide Ammonium hydroxide water sodium chloride
Balanced equation
Balance the chemical equation algebraically:
NH4Cl + NaOH → NH3 + H2O + NaCl
Add stoichiometric coefficients, c, to the reactants and products:
c1NH4Cl + c2NaOH → c3NH3 + c4H2O + c5NaCl
Set the number of atoms in the reactants equal to the number of atoms in the products for Cl, H, N, Na and O:
Cl: c1 = c5
H: 4c1+c2 = 3c3 + 2c4
N: c1 = c3
Na: c2 = c5
O: c2 = c4
Since the coefficients are relative quantities and underdetermined, choose a coefficient to set arbitrarily. To keep the coefficients small, the arbitrary value is ordinarily one. For instance, set c1 = 1 and solve the system of equations for the remaining coefficients:
c1 = 1
c2 = 1
c3 = 1
c4 = 1
c5 = 1
Substitute the coefficients into the chemical reaction to obtain the balanced
equation:
Answer:
NH4Cl + NaOH → NH3 + H2O + NaCl
Word equation
ammonium chloride + sodium hydroxide → ammonia + water + sodium chloride
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