Respuesta :

pOH + pH = pKw

pOH + pH - pH = pKw - pH

pOH = pKw - pH.

The correct equation used to calculate pOH would be C. pOH = pKw - pH.
 
pOH + pH = pKw 

pOH + pH - pH = pKw - pH 

pOH = pKw - pH. 

  pOH = pKw - pH.hope this helps