Question

Write the formulae for Caustic soda and calculate the molecular mass for Caustic soda

Answer 1

• The formula of caustic potash is $\mathrm{NaOH}$
• Molecular mass of a substance is defined as the sum of masses of atoms or elements present in the molecule.
• So the atomic mass of $\mathrm{NaOH}$= Atomic mass of $\mathrm{Na}$+Atomic mass of $\mathrm{O}$+Atomic mass of $\mathrm{H}$

$$\begin{gathered} =23+16+1 \\ =40u \end{gathered}$$