2Agcl splits into 2Ag+cl2

here why 2 is on the front for Ag and 2 is down for cl₂?

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Solution

Dear Student,
Ag is silver and it is a metal
It exists as Ag atom itself.
Cl is chlorine and it is a gas.
It always exists as 2 chlorine atoms connected together. In other words it exists as cl₂ molecule

2 infront of Ag suggests that there are 2 Ag atoms
cl₂ means that there is one chlorine molecule which consists of 2 atoms

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Why 2agcl is written as 2ag+cl subscript 2 why not 2ag+2cl

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Δ G^{o}

2 A g C l (s) + H_{2} (g) \to 2 A g (s) + 2 H^{+} + 2 C l^{-}

(K_{c})

2 I C l (s) ⇌ I_{2} (s) + C l_{2} (g)

a

b

P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g),

K_{c} .

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