Point out the correct relation between ${\mathrm{K}}_{\mathrm{a}},{\mathrm{K}}_{\mathrm{b}}\text{ and }{\mathrm{K}}_{\mathrm{w}}$

 

• A

  ${\mathrm{K}}_{\mathrm{a}}+{\mathrm{K}}_{\mathrm{b}}={\mathrm{K}}_{\mathrm{w}}$

• B

  ${\mathrm{K}}_{\mathrm{a}}-{\mathrm{K}}_{\mathrm{b}}={\mathrm{K}}_{\mathrm{w}}$

• C

  ${\mathrm{K}}_{\mathrm{a}}\times {\mathrm{K}}_{\mathrm{b}}={\mathrm{K}}_{\mathrm{w}}$

• D

  $\frac{{\mathrm{K}}_{\mathrm{a}}}{{\mathrm{K}}_{\mathrm{b}}}={\mathrm{K}}_{\mathrm{w}}$