anonymous
  • anonymous
Which of the following chemical reactions is an oxidation-reduction reaction? CuSO4 + BaCl2 yields BaSO4 + CuCl2 Pb(NO3)2 + 2NaCl yields PbCl2 + 2NaNO3 N2 + 3H2 yields 2NH3 K2SO4 + BaCl2 yields BaSO4 + 2KCl
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Put on the ox number by the following rules: http://www.dummies.com/how-to/content/rules-for-assigning-oxidation-numbers-to-elements.html Element which get change in ox.n. are or ox or red. Whan you had a raction containing ox and red atoms, its a red-ox
anonymous
  • anonymous
@taramgrant0543664 would c be correct?
taramgrant0543664
  • taramgrant0543664
Yes c would be correct

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anonymous
  • anonymous
What is true of an element that was oxidized in a chemical reaction? It lost electrons. It gained electrons. It increased electronegativity. It decreased electronegativity.
anonymous
  • anonymous
would b be correct @taramgrant0543664 ?
taramgrant0543664
  • taramgrant0543664
Lose electrons oxidized, gain electrons reduced
anonymous
  • anonymous
so a would be correct @taramgrant0543664
taramgrant0543664
  • taramgrant0543664
Yes a would be correct
anonymous
  • anonymous
What is the oxidation number of oxygen (O) in O2? 0 +2 āˆ’2 +4
anonymous
  • anonymous
would b be correct @taramgrant0543664
anonymous
  • anonymous
Rule 1: The oxidation number of an element in its free (uncombined) state is zero ā€” for example, Al(s) or Zn(s). This is also true for elements found in nature as diatomic (two-atom) elements
anonymous
  • anonymous
so @Bozhena b would be wrong
anonymous
  • anonymous
yes, b is wrong
taramgrant0543664
  • taramgrant0543664
It's electrically neutral just like we did with F2
anonymous
  • anonymous
so a would be right?
taramgrant0543664
  • taramgrant0543664
It would be a since it would become neutral
anonymous
  • anonymous
Which of the following describes an element that is reduced in a reaction? It acts in the reactant that is the reducing agent. It has a decrease in its oxidation number. Cd yields Cd2+ + 2eāˆ’ Zn + Cu2+ yields Zn2+ + Cu
anonymous
  • anonymous
for c and d are both incorrect ithink
taramgrant0543664
  • taramgrant0543664
Gaining electrons is reduced and therefore the oxidation number would become more negative so there would be a decrease in oxidation number
anonymous
  • anonymous
so b is correct
taramgrant0543664
  • taramgrant0543664
Yes it would be

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