Write balanced chemical equations for the following reaction and identify the type of reaction in each case a) Sodium bicarbonate decomposes on heating to give sodium carbonate, water and carbon dioxide. b) Dilute sulphuric acid reacts with aluminum powder to form aluminium sulphate and hydrogen gas. c) Silver bromide on exposure to sunlight decomposes into silver and bromine. d) Copper sulphate on treatment with potassium iodide precipitates cuprous iodide (Cuzla), liberates iodine gas and also forms potassium sulphate. e Sodium hydroxide reacts with zinc to form sodium zincate and hydrogen gas. f) Lead nitrate solution reacts with potassium iodide solution to form lead iodide precipitate and potassium nitrate solution.
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A. Baking soda, or sodium bicarbonate (NaHCO3).
B. Dil sulphuric acid +Alluminium -> Alluminium Sulphate + hydrogen gas, 3H2So4(aq)+2Al(s) -> Al2(So4)3+3H2.
C. Silver Bromide is exposed to light, it decomposes to silver metal and bromine vapours. 2AgBr (s) ------> 2Ag (s) + Br2 (g).
D. 2CuSO4+4KI→Cu2I2+I2+2K2SO4.
E. sodium hydroxide reacts with zinc and water to form sodium zincate and hydrogen gas. Zn(s)+2NaOH(aq)+2H2O(l)→Na2Zn(OH)4.
F. Pb(NO3)2 + 2KI → PbI2 + 2KNO3
Explanation:
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