Saved Bookmarks
| 1. |
Write the balanced equation for the. following reaction in each case. (i) Potassium bromide + Barium iodide—-> Potassium iodide + Barium bromide. |
|
Answer» Explanation: (a) Potassium bromide(aq) + Barium IODIDE(aq) → Potassium iodide(aq) + Barium bromide(s) 2KBr (aq)
+BaI 2
(aq)
→2KI (aq)
+BaBr 2
(s)
In this reaction, both the reactants exchanges ions to for two new products, HENCE, it is a double displacement reaction (b) zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g) ZnCO 3
(s)
→ZnO (s)
+CO 2
(g)
In this reaction, a single substance yields two different product. hence, it is a decomposition reaction (c) HYDROGEN(g) + Chlorine(g) → Hydrogen chloride(g) H 2
(g)
+Cl 2
(g)
→2HCl (g)
In this reaction, two different reactants REACT with each other to form a single product. Hence, it is called a combination reaction (d) MAGNESIUM(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g) Mg (s)
+2HCl (aq)
→MgCl 2
(aq)
+H 2
(g)
In this reaction, more reactive Mg is replacing less reactive H. Hence, it is displacement reaction |
|