Question

A metal mx when exposes to light splits up to form metal M & a gas X2metal M is used in
making ornaments whereas gas X2 is used in making breaching powder (caocl2) salt Mx is itself used in black & white photography
1)identify metal M
2)identify gas X2
3)Name the metal salt mx
4)mention the type of chemical reaction which
takes place & give equation for the reacion​

Answer 1

Explanation:

Given -

• A metal salt MX when expose to light splits up to form metal M and gas X2.
• M is used in making ornaments
• X2 is used in making bleaching powder.
• Salt MX is itself used in black and white photography.

To Find -

• Identify Metal M
• Identify Gas X2
• Name the metal salt MX
• Mention the type of chemical reaction which takes place and give equation for the reaction.

It is cleared that,

• M is Ag (Silver) which is used to make ornaments.

And

• X2 is Cl2 (Chlorine gas) which is used to make bleaching powder.

And

• The salt MX, i.e, salt of Ag and Cl2 is Silver chloride (AgCl).

AgCl is used in black and white photography.

Hence,

M is Ag (Silver)

X2 is Cl2 (Chlorine gas)

MX is AgCl (Silver chloride)

This is the type of decomposition reaction.

Chemical equation :-

• 2AgCl → 2Ag + Cl2

Additional information :-

Types of chemical reaction :-

• Combination reaction -

Those reaction in which two or more substances combined to form a single substance, are called combination reaction.

• Decomposition reaction -

Those reaction in which a compound splits up into two or more simpler substances are known as decomposition reaction.

• Displacement reaction -

Those reaction in which one element takes the place of another element in a compound, are known as Displacement reaction.

• Double Displacement reaction -

Those reaction in which two compounds react by an exchange of ions to form two new compounds are called double displacement reaction.