Cards in this guide (11)
What is the basic unit of chemistry
Calculate the number of atoms of O contained in 16.0 pounds of O
16.0 lbs = 7,257 g of O2
Oxygen exists in the gas form as 02
7,257g O2 * 1 mol O2/ 32 g * 2 mol O / 1 mol O2 * 6.022x10^23
atoms/mol
= 2.73E26 atoms of O
What can be said about a redox reaction that has a positive potential
. The reaction will be spontaneous.
What conditions will cause a redox reaction to be nonspontaneous
The sum of the voltages of the oxidatiin and reduction
half-reactions is negative.
What happens to the anode in an electrochemical cell
What will form a spontaneous redox reaction between two elements
The element with the greater reduction potential is the one that
is reduced.
What drives a galvanic cell
A Spontaneous Redox Reaction
What is the standard cell notation of a galvanic cell made with aluminum and nickel
Al(s) | Al3+(aq) Ni2+(aq) | Ni(s)
What is the oxidation half-reaction for Mg s plus ZnCl2 aq --- MgCl2 aq plus Zn s
MgCl2 aq plus Zn s is the oxidation half-reaction for Mg s plus
ZnCl2 aq.
What is the overall voltage for a redox reaction with the half reactions Mg s -- Mg2 plus plus 2e- and Cu2 plus -- Cu s
The overall voltage for a redox reaction with the half reactions
Mg s -- Mg2 plus plus 2e- and Cu2 plus -- Cu is 76 V.
All life on earth is ultimately dependent on what