S.+Lindo+Single+Displacement



lead

A. Single Displacement Ex. Al + Pb2 (NO3)-1  à Pb + Al3 (NO3)-1 (this is with charges of each element, the switchero has not been done yet) Ex. Al + Pb2 (NO3)-1  à Pb + Al3 (NO3)-1 **no switchero** Al + Pb (NO3)2  à Pb + Al (NO3)3 **with switchero** 1 Al 1 1 Pb 1 6 NO 9 not **balanced** 2Al + 3Pb (NO3)2  à 3Pb + 2Al (NO3)3 2 Al 2 3 Pb 3 18 NO 18 **it’s balanced** (to get 18 for NO you multiple the NO’s two numbers together then multiply the coefficient. Ex. 2Al (NO3)3 = 3 *3 * 2 = 18)
 * B.  ** When a reactive metal replaces a less reactive metal in a salt
 * C.  ** A + BC  à  AC + B
 * D.  **  Solid aluminum is placed in aqueous lead(II) nitrate to produce solid lead and aqueous aluminum nitrate
 * E.  ** 1st thing you need to do is write all the symbols for all the elements. 2nd thing you need to do is find the charges of each element. 3rd thing you need to do is do the switchero method which is when you switch the charges between elements. 4th thing you need to do is reduce so that your charges are whole numbers. HINT: Nitrate is (NO3)-1 and Lead(II) is Pb2( the 2 is the charge in this case)
 * F.  ** The point of balancing an equation is that each side of the equation is equal. 1st thing you do is make sure that you change your sentence into a formula. 2nd thing you do is make a chart that shows all your elements. On the left and right hand side of each of those elements you’re going to write how much of one element is before and after the arrow. If your equation is not balanced you’re going to start plugging in coefficients or numbers before your elements until their balanced.

S. Lindo Reaction Teaching Wiki 2008