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Write the chemical equation of the reaction in which the following changes have taken place with an example of each. |
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Answer» i) Change in colour Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag. The solution will become blue in colour and shining silver metal will be deposited ii) Change in temperature. NaOH + HCl → NaCl + H2O + Heat. The temperature will increase because heat is evolved. iii) Formation of precipitate. Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) Yellow PPt Yellow precipitate of Phi, will he formed. |
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