Prelab Amignt for Chemical Equations Part th Single Displace

Prelab Amignt for Chemical Equations Part th Single Displacement Reactions and Electrochenistry You must ead the next experiment and thennwerthese questicns 1) Define the following terms: 14 ps) a) reduction c) activity series 4) single displacemeat reaction 2) Consider the following reaction: (2 pes each) a)What is the charge on the copper ion is CuSO, b) What is the charge on the Cus) metal? e) Did the copper ion lose electrons or gain electroos to become copper metal 124

Solution

Reduction : reduction is define as the gain of one or more electron by a substance.(gain of e^-)

Example 1)   H_2(g)    2H⁺ + 2e^-

Oxidation : An oxidation is defined as the loss of one or more electron from a substance (loss of e^-)

Example 1)   Zn_(s)    Zn²⁺ + 2e^-

Acitivity series : A list of element /ions in order of decreasing reduction potential.

activity series is used to predict if a reaction will occur between two compounds.

Single displacement reaction : A single displacement reaction is one in which a single element replaces another element which is in a compound.

In this reaction,only elements having higher reactivity can replace element having lower reactivity from their salt solution.

Example Fe + CuSO₄ Cu + FeSO₄