Redox 1: Question Preview (ID: 14561)

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An oxidizing agent will always
a) lose electrons b) increase in mass c) be reduced d) increase in oxidation number
In a redox reaction, the species that loses electrons
a) is oxidized b) decreases in oxidation number c) gains mass at the electrode d) is called the cathode
The reaction 2 NaCl --> 2 Na + Cl2 is an example of
a) an oxidation reaction, only b) neither an oxidation nor a reduction reaction c) both an oxidation and reduction reaction d) a reduction reaction, only
Oxidation-reduction reactions occur because of the competition between particles for
a) neutrons b) positrons c) protons d) electrons
Mg + PbCl2 --> MgCl2 + Pb. Which statement correctly describes the oxidation and reduction that occur?
a) Mg is oxidized and Cl- is reduced b) Mg is reduced and Pb+2 is oxidized c) Mg is reduced and Cl- is oxidized d) Mg is oxidized and Pb+2 is reduced
In the reactions Sn+2 + 2 Fe+3 --> Sn+4 + 2 Fe+2, the reducing agent is
a) Fe+2 b) Sn+4 c) Sn+2 d) Fe+3
As an element is oxidized, its oxidation number
a) increases as electrons are lost b) decreases as electrons are gained c) increases as electrons are gained d) decreases as electrons are lost
A solution of 1.0 M Pb(NO3)2 will not react with a container made of
a) Cu b) Zn c) Sn d) Fe
Pb + 2 Ag+ --> Pb+2 + 2 Ag. The chemical species being reduced is
a) Pb b) Ag c) Pb+2 d) Ag+
In the reactions Sn+2 + 2 Fe+3 --> Sn+4 + 2 Fe+2, the oxidizing agent is
a) Sn+2 b) Fe+2 c) Sn+4 d) Fe+3
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