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Chem - Chap 8

Section 3 - Activity Series of the Element

QuestionAnswer
Predict whether reaction will occur. If yes, write the products & balance the equation for Cr(s) + H2O(l) no
Predict whether reaction will occur. If yes, write the products & balance the equation for Pt(s) + O2(g) no
Predict whether reaction will occur. If yes, write the products & balance the equation for Cd(s) + 2HBr(aq) yes; Cd(s) + 2HBr(aq) --> CdBr2(aq) + H2(g)
Predict whether reaction will occur. If yes, write the products & balance the equation for Mg(s) + steam yes; Mg(s) + 2H2O(g) --> Mg(OH)2(aq)+H2(g)
Identify the element that replaces hydrogen from acids but cannot replace tin form its compound Pb
What is the most active transition metal Mn
The ability of an element to react is referred to as The elements activity
a list of elements organized according to the ease with which the elements undergo certain chemical reactions activity series
For metals, greater activity means a greater ease of loss of electrons, to form positive ions
For nonmetals, greater activity means a greater ease of gain of electrons, to form negative ions
The order in which the elements are listed is usually determined by single-displacement reactions
The most-active element, placed at the top in the series, can replace each of the elements below it from a compound in a single-displacement reaction
activity series are based on experiment
Metals that react with cold H2O and acids, replacing hydrogen. React with oxygen forming oxides Li, Rb, K, Ba, Sr, Ca, Na
React with steam (but not cold water)and acids, replacing hydrogen. React with oxygen, forming oxides Mg Al Mn, Zn, Cr, Fe, Cd
React with oxygen, forming oxides H2, Sb, Bi, Cu, Hg
Fairly unreactive, forming oxides only indirectly Ag, Pt, Au
Created by: tbstinso