PLEASE JUST CHECK THE ATTACHMENT IN THE FILES.
Why is oxygen reduced in the reaction of hydrogen with oxygen to make water?
Oxygen pulls electrons toward itself.
Oxygen pushes electrons toward the hydrogens.
Oxygen absorbs a proton.
Which term describes the following process? 2Fe(s) + O2(g) + 2H2O(l) → 2Fe(OH)2(s)
4Fe(OH)2(s) + O2(g) +2H2O(l) → 4Fe(OH)3(s)
The half-reaction method is particularly useful for balancing redox equations.
A spontaneous reaction causes current to flow in an electrolytic cell.
Which of the following chemical equations represents an oxidation-reduction reaction?
Mg(OH)2 + 2HCl → MgCl2 + 2H2O
BiCl2 + Na2SO4 → 2NaCl + BiSO4
Identify the products formed in the net reaction of the electrolysis of water.
liquid hydrogen and oxygen gas
liquid oxygen and hydrogen gas
hydrogen gas and oxygen gas
The gas produced at the cathode in the electrolysis of brine is _________.
H is oxidized and Cl is reduced in this reaction. 2ClO- +H2 +2e- →2Cl- +2OH-
In which of the following species is the oxidation number of sulfur less than 6?
A proton is transferred between a conjugate acid-base pair.
A Lewis base is a substance that can _________.
accept a pair of electrons
donate a pair of electrons
donate a hydrogen ion
Which combination of acid and salt in aqueous solution would form a buffer?
carbonic acid and sodium carbonate
hydrochloric acid and potassium chloride
sulfuric acid and calcium sulfate
Which type of solution is one with a pH of 7?
The formula of the ammonium ion is written as _________.
A highly active metal is most easily oxidized.
When an acid reacts with a base, what compounds are formed?
a salt and water
a salt only