Which of the following is most likely structure of CrO3.6H2O if 1/3 of total chlorine of the compound is precipitated by adding AgNO3 to its aqueous solution ?

Question

Which of the following is most likely structure of CrO3.6H2O if 1/3 of total chlorine of the compound is precipitated by adding AgNO3 to its aqueous solution ? (A) CrCl3.6H2O (B) [Cr(H2O)3Cl3](H2O)3 (C) [CrCl2(H2O)4]C1.2H2O (D) [CrCl.(H2O)5]Cl2.H2O

Tardigrade Admin · Accepted Answer

Out of 3 Cl atoms, only one Cl atom is ionisable. The other two Cl atoms are part of coordination sphere. Hence its structure is [CrCl2(H2O)4]C1.2H2O

Q. Which of the following is most likely structure of $C r O_{3} .6 H_{2} O$ if 1/3 of total chlorine of the compound is precipitated by adding $A g N O_{3}$ to its aqueous solution ?

$C r C l_{3} .6 H_{2} O$

$[C r (H_{2} O)_{3} C l_{3}] (H_{2} O)_{3}$

$[C r C l_{2} (H_{2} O)_{4}] C 1.2 H_{2} O$

$[C r Cl . (H_{2} O)_{5}] C l_{2} . H_{2} O$

Out of 3 Cl atoms, only one Cl atom is ionisable. The other two Cl atoms are part of coordination sphere. Hence its structure is $[C r C l_{2} (H_{2} O)_{4}] C 1.2 H_{2} O$

Q. Which of the following is most likely structure of CrO3​.6H2​O if 1/3 of total chlorine of the compound is precipitated by adding AgNO3​ to its aqueous solution ?

CrCl3​.6H2​O

[Cr(H2​O)3​Cl3​](H2​O)3​

[CrCl2​(H2​O)4​]C1.2H2​O

[CrCl.(H2​O)5​]Cl2​.H2​O