Give an example of a double displacement reaction other than the one given in Activity 1.10.

Ques 2: Give an example of a double displacement reaction other than the one given in Activity 1.10. 


Ans 2: Sodium carbonate reacts with calcium chloride to form calcium carbonate and sodium chloride.

   Na2 CO3 + C a Cl2 → C a CO3 + 2 Na Cl


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Phosphorus and chlorine form two compounds.The first compound contains 22.54% by mass of phosphorus and 77.46% by mass of chlorine. In the second compound the percentages are 14.88 for phosphorus and 85.12 for chlorine. Show that these data are consistent with the law of multiple proportions.