Question

4gm of NaOH are put into 10 litre of water. The ph of resulting solution will be

Answer 1

Answer:

maybe 10 molar

Explanation:

Answer 2

Answer:

mole = weight in gm/molecular mass of NaOH then mole=4/58.5 , mole=0.068 then [OH-]= mole/lit then [OH-] =0.0068 and pOH= -log base 10 [OH-] then pOH = -log10[0.0068] then pOH=2.16 and 14=pH+pOH so 14=pH+2.16 then pH = 14-2.16 then pH = 11.84