Question

At pH = 4,  exists as:

Solution

Correct option is

 

pH = 4 (i.e., acidic medium) no change but

at pH = 12 (i.e., basic medium)

 

                     

SIMILAR QUESTIONS

Q1

In acidic medium H2O2 changes K2Cr2O7 to CrO5 (deep violet solution in ether) having two peroxy linkage. Oxidation number of Cr in CrO5 is:

Q2

Hg­2Cl2 ionises as ……... and cation has ……… unpaired electron (s).

Q3

Transition metals form alloys easily. The reason for this is

Q4

An inorganic compound on strong heating gave a blackish brown powder and two oxides of sulphur. The powder was dissolved in HCl when a yellow solution was obtained which gave a blood red coloured solution with thiocyanide ions. The inorganic compound may be

Q5

The species that undergoes disproprotionation in an alkaline medium are

Q6

In industrial smog, Cu corrodes to