Question

What is the molecular formula for sodium meta aluminate\[?\]

Answer 1

Hint: First we have to know that a molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule. Sodium meta aluminate is a commonly accepted type of sodium aluminate (\[NaAl{O_2}\]). It is an inorganic chemical which is used in many industrial and technological applications as an efficient source of aluminium hydroxide.

Complete answer:
Sodium aluminate is manufactured by the dissolution of aluminium hydroxide (\[Al{\left( {OH} \right)_3}\]) in a \[NaOH\](caustic soda) solution. Aluminium hydroxide can be dissolved up to \[25\% \] in aqueous \[NaOH\] solution at a temperature near the boiling point. Sodium meta aluminate is formed when two water molecules are associated with sodium aluminate chemical compounds. Therefore, it is a dihydrate form. Normally,\[Al{O_2}^ - \] ion is called “meta” while the \[Al{O_3}^{ - 3}\] ion is called the “ortho” compound.
Sodium meta aluminate is a white crystalline solid with a molecular formula given as \[NaAl{O_2}\], \[NaAl{\left( {OH} \right)_4}\] in the hydrated form, \[N{a_2}O.A{l_2}{O_3}\] in various forms.

Note:
 Note that the empirical formula represents the simplest whole integer ratio of atoms in a compound. molecular formulas show the number of each type of atom in a molecule. Structural formulas show how the atoms in a molecule are bonded to each other.