Hg²+

Question 1

Is Hg²+ soluble in aqua regia?

Answer 1

YES

Question 2

Hg²+ HNO3 + HCl

Answer 2

HgCl2 + S (white ppt) + NO(gas) + water

Question 3

Hg²+ + KI mention colour too

Answer 3

HgI2(red)

Question 4

HgI2 + excess KI mention colour too

Answer 4

[HgI4]²- (colourless)

Question 5

Hg²+ + SnCl2

Answer 5

Hg(ppt) + SnCl4

Question 6

Hg²+ Co(SCN)2 mention colour too

Answer 6

Co[Hg(SCN)4] (deep blue)

Question 7

Hg²+ NaOH mention colour and whether the colour might change?

Answer 7

HgO(reddisih brown ppt), the colour changes to yellow depending on stoichiometric quantities

Question 8

Is HgO soluble in excess NaOH?

Answer 8

No but its soluble in acid

Question 9

Hg²+ + NO3- + NH3 mention colour too

Answer 9

HgO.[Hg(NH3)(NO3)] (white)

Question 10

Can Hg²+ or Hg2²+ form ppt with aq NH3

Answer 10

No