zinc reacts with hydrochloric acid
3) Zinc reacts with hydrochloric acid according to this reaction:
Zn(s) + 2HCl (aq) → ZnCl2(aq) + H2(g)
Which of the following will react the fastest?
a.2.0 gram lump of zinc in 0.10Â M hydrochloric acid
b.2.0 gram sample of powdered zinc in 0.10 M hydrochloric acid
c.2.0 gram lump of zinc in 0.50 M hydrochloric acid
d.2.0 gram sample of powdered zinc in 0.50 M hydrochloric acid
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4)Ethanol (C2H6O), which is a renewable resource produced from plants, is mixed with with gasoline for use in flex-fuel vehicles. It burns according to the following chemical equation:
   C2H6O + 3O2 ⇄ 2CO2 + 3H2O + energy
If a catalyst is added, what would happen to the rate of the reaction?
a.The reaction would speed up.
b.The reaction would slow down.
c.There would be no change in the rate of the reaction.
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5)Which would burn faster?
a.alcohol burning in the presence of pure oxygen
b.alcohol burning in air
Answers
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Posted 15 May 2017 12:05 AM
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