A metal salt MX when exposed to light splits up to form metal M and a gas X2- Metal M is used in making ornaments whereas gas X2 is used in making bleaching powder- The salt MX is itself used in black and white photography- a What do you think metal M is - b What could be gas X2 - c Name the metal salt MX- d Name any two salt solutions which on mixing together can produce a precipitate of salt MX- e What type of chemical reaction takes place when salt MX is exposed to light - Write the equation of the reaction-

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Standard X

Chemistry

Decomposition Reaction

A metal salt ...

Question

A metal salt MX when exposed to light splits up to form metal M and a gas X_2. Metal M is used in making ornaments whereas gas X₂ is used in making bleaching powder. The salt MX is itself used in black-and-white photography.
(a) What do you think metal M is?
(b) What could be gas X₂?
(c) Name the metal salt MX.
(d) Name any two salt solutions which on mixing together can produce a precipitate of salt MX.
(e) What type of chemical reaction takes place when salt MX is exposed to light? Write the equation of the reaction.

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Solution

(a) Silver.
(b) Chlorine.
(c) Silver chloride.
(d) Silver nitrate and Sodium chloride.
(e) Decomposition reaction;

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(a) Silver.(b) Chlorine.(c) Silver chloride.(d) Silver nitrate and Sodium chloride.(e) Decomposition reaction;

(a) Silver.
(b) Chlorine.
(c) Silver chloride.
(d) Silver nitrate and Sodium chloride.
(e) Decomposition reaction;