Home
Class 12
CHEMISTRY
.Give reason for the following: (a) Scho...

.Give reason for the following: (a) School bells are made up of metals. (b) Electric wires are made up of copper.

Text Solution

Verified by Experts

(A) is insoluble is dil `HNO_(3)`
`rArr(A)` is of group II (copper sub group) and is `HgS` [only `HgS` (black ) is insolution in dil , `[HNO_(3)]`

`HgCI_(2) +2NaOH rarr underset("Yellow ppt".(C))(HgO darr +) 2NaCI +H_(2)O`
`HgCI_(2)+2KI rarr underset(("Orange"))(underset((D))(HgI_(2)darr+)2KCI)`
`HgI_(2) +2KI rarr underset((E)("soluble"))(K_(2)HgI_(4))`
`NH_(4)^(o+) +NaOH overset(Delta)rarr NH_(3) +H_(2)O +Na^(o+)`

`underset((B))(HgCI_(2))+ H_(2)S rarr underset(Black)(HgS +2HCI)`
Promotional Banner

Topper's Solved these Questions

  • QUALITATIVE INORGANIC SALT ANALYSIS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Linked Comprehension)|67 Videos

  • QUALITATIVE INORGANIC SALT ANALYSIS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Multiple Correct) Part-A (Analysis Of Anions)|30 Videos

  • QUALITATIVE INORGANIC SALT ANALYSIS

    CENGAGE CHEMISTRY ENGLISH|Exercise Viva Voce Questions And Part-C (Analysis Of Cations)|42 Videos

  • P-BLOCK GROUP 18 ELEMENTS - THE INERT GASES

    CENGAGE CHEMISTRY ENGLISH|Exercise Ex 5.1 (Objective)|14 Videos

  • REDUCTION AND OXIDATION REACTION OF ORGANIC COMPOUNDS

    CENGAGE CHEMISTRY ENGLISH|Exercise SUBJECTIVE TYPE|4 Videos

Similar Questions

Explore conceptually related problems

Genes are made up of

Bast fibres are made up of

Sutures are made up of :

Electromagnets are made up of:

Enzymes are made up of

Yellow fibres are made up of

Pyrenoids are made up of

Nylon threads are made up of

Compounds are made up of elements.