1.

Explain how:- (I) 2KBr + BaI2 -> 2KI + BaBr2 a precipitation reaction.(II) H2 + Cl2 -> 2HCl a photochemical decomposition reaction..

Answer»

t equatioo the ions of the compound are EXCHANGE and form a insoluble compound (KI)           IN second EQUATION two element combines to form the single substance (hcl) is formed is called combination REACTION not photo decomposition it done in presence of sunlight so it is called photochemical



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