Respuesta :

Erudite1
The value of hydronium ion ought to be 1* 10-^7
In that case, the value of pH can be calculated using the formula:
pH = - Log [H3O+].
pH = - Log [1 * 10^-7] 
pH = - [-7]
pH = 7
From this calculation, the correct answer will be A, which is 7.