Single+Displacement

__Single Displacement Reactions__
__Definition__: In a single-displacement reaction, one element replaces a similar element in a compound. It can also be called a replacement reaction. This reaction can be represented by the following equation.


 * A + BX = AX + B**

This means that element A replaces element B when the reaction takes palce.

__Simple Equation__

Li + __K= LiK + Na

By noticing that a single displacement reaction is taking place, you could easily figure out the missing element... Na.__

Word Equation and Balancing__ Q: When solid aluminium is placed in liquid lead (ll) nitrate, solid lead and liquid aluminium nitrate are formed. 1) The first step is to write the symbols that the word equation represents.

Al + Pb (NO3) > Pb+ Al(NO3) 2) The second step is to find and add in the charges each substance holds and do the "switcheroo".

Al + 3Pb(NO3)2---> Pb + 2Al (NO3)3 3) The third step is balancing the equation so that each side, the reactants and the products have equal numbers of atoms for each element. To do this you can set up a table.


 * Element** Al Pb N O


 * Reacant** 1 **3** 6 18

To make the equation balanced, you add coefficiants to the fronts of the elements on either side to get the same number of each element on each side. Our final equation is : **2Al + 3Pb(NO3)2-> 3Pb+ 2Al(NO3)3
 * Product** 2 **1** 6 18

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