Home
Class 12
CHEMISTRY
An orange coloured compound (A) on heati...

An orange coloured compound (A) on heating decomposes to form a solid and gaseous mixture which contain a gas (B) and `H_(2)O` vapour. (B) on treatment with `CaC_(-2)` forms (C ). (C ) on hydrolysis with hot `H_(2)O` produces a gas (D) which when added to `Hg_(2)Cl_(2)` results in the formation of a black precipitate.
What would have been the colour of the solution if (D) is added in excess to `Ni^(2+)` solution.

A

Red

B

Green

C

Colourless

D

Blue

Text Solution

Verified by Experts

The correct Answer is:
D
`(NH_(4))_(2)Cr_(2)O_(7)overset(Delta)(rarr)Cr_(2)O_(3)+underset((B))(N_(2))+H_(2)O`
`N_(2)+CaC_(2)rarr underset((C ))(CaNCN)`
`darr H_(2)O`
`CaCO_(3)+NH_(3)`
`underset("Excess")(NH_(3))+Ni^(2+)rarr underset("Blue solution")([Ni(NH_(3))_(6)]^(2+))`
Promotional Banner

Topper's Solved these Questions

  • QUALITATIVE ANALYSIS

    NARAYNA|Exercise Passage-IV|3 Videos

  • QUALITATIVE ANALYSIS

    NARAYNA|Exercise Matric matching type|2 Videos

  • QUALITATIVE ANALYSIS

    NARAYNA|Exercise Passage -II|7 Videos

  • PRACTICAL ORGANIC CHEMISTRY

    NARAYNA|Exercise SUBJECTIVE_TYPE|1 Videos

  • SOLID STATES

    NARAYNA|Exercise EXERCISE-4|18 Videos

Similar Questions

Explore conceptually related problems

An orange coloured compound (A) on heating decomposes to form a solid and gaseous mixture which contain a gas (B) and H_(2)O vapour. (B) on treatment with CaC_(-2) forms (C ). (C ) on hydrolysis with hot H_(2)O produces a gas (D) which when added to Hg_(2)Cl_(2) results in the formation of a black precipitate. Compound B is

An orange coloured compound (A) on heating decomposes to form a solid and gaseous mixture which contain a gas (B) and H_(2)O vapour. (B) on treatment with CaC_(-2) forms (C ). (C ) on hydrolysis with hot H_(2)O produces a gas (D) which when added to Hg_(2)Cl_(2) results in the formation of a black precipitate. Compound A is

H_(2)S reacts with lead acetate forming black compound which reacts with O_(3) to form another compound Y. The colour of the compound Y is:

The blue colour produced on adding H_2O_2 to acidified K_2Cr_2O_7 is due to the formation of

When dilute H_(2)SO_(4) and H_(2)O_(2) are added to a solution of chromate ions, an intense blue colour is produced, which is stable in ether. Theis is due to the formation of

Hydrogen sulphide reacts with lead acetate forming a black compound which reacts with H_2O_2 to form another compound. The colour of the compound is

An orange solid (A) on heating gives a green residue (B), a colourless gas (C ) and water vapours. The dry gas (C ) on passing over heated Mg gave a white solid (D). (D) on reaction with water gave a gas (E) which formed black preciptate with mercurous nitrate solution. The green residue (B) is :