Test Preparation on Ionic Equilibrium-III-Chemistry Test Series For NEET-2020
1.
The pH value of decinormal ution of NH4OH which is 20% ionised, is
2.
The aqueous ution of which of the following salt has the lowest pH (a) NaClO (b) NaClO2 (c) NaClO3 (d) NaClO4
NaClO4 is a salt of strong acid HClO4 . So it is a strong acid salt.
3.
4.
Order of acidic strength is H2Te > H2Se > H2S > H2O Na2O is a salt of NaOH +H2O and H2O is least acidic among given acids hence pH in this case will be maxm .