Experiment 10 Prelab Assignment (Due before lab starts) Name ingle Displacement

Question

Experiment 10 Prelab Assignment (Due before lab starts) Name ingle Displacement Lab day /time A student tests four elements; A, B, C, and D, for their relative reactivities. The following reactions were observed. (X represents any anion) Evidence of reaction Equation: D +CX->DX + ? A CXNo Reaction Metalturns.black Tube 2:_ None Tube 3 Gas is evolved 1. Complete the following table by writing the symbols of the two elements whose reactivities are being compared in each test. Tube Number reater Activity esser Activity nd caused no reaction or, 2) it is the one The element with greater that was able to displace the anion from the other element and took it "The element of lesser activity is the one that ether 1) lost the reaction or, , then showed an evidence of reaction anion during the reaction and showed an evidence of 2) was not able to displace the anion from the other element, showing no evidence of reaction. 2. Using the table from question 1 arrange A, C, and D in order of their activities, listing the most active first. 3. Arrange B, C, and D in order of their activities, listing the most active first 4. Arrange all four elements, A, B, C, & D in an activity series listing the most active first. 5. Based on the evidence of this reaction and the activity series you developed in question 4, a) would A + DX react ? b) would B + CX react ? 69

Explanation / Answer

1) 1 2 3

Greater activity order is B D C

Lesser activity order A C D

2) of ACD most active first to leat active last   D > C > A

3 ) of BCD most active first to leat active last B > D > C

4) of ABCD most active first to leat active last B >D > C > A

5) A + DX = no reaction

B + CX = reaction occurs ( BX + C are formed)  

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