Daily practice questions 1,
2,
3,
4,
5,
6,
7,
8,
Three reactions involving H2PO4 are given below
(i) H3PO4 + H2O ® H3O+ + H2PO4
dated :5/10/2017
(ii) H2PO4 + H2O ® HPO42 + H3O+ (iii) H2PO4 + OH ® H3PO4 + O2 In which of the above does H2PO4 act as an acid?
9, Which of the following contains P O P bond?
A)
B)
Hypophosphorous acid
Phosphorous acid
C)
D)
Pyrophosphoric acid
Orthophosphoric acid
10 ,Four species are listed below: (i) HCO3 (ii) H3O+ (iii) HSO4 (iv) HSO3F Which one of the following is the correct sequence of their acidic strength?
A)
B)
iii < I < iv < ii
iv < ii < iii < i
C)
D)
ii < iii < I < iv
i < iii < ii < iv
Answer:
1,
2,
3,
4,
5, b 6, c 7, A
8, b-(ii)
9, c 10, D