Chemistry, 24.09.2019 09:00 tovarclaudia055
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 0.10 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
Answers: 1
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The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). the reaction between the acid and the zinc 2h+(aq)+zn(s)→h2(g)+zn2+(aq) . when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °c is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 °c .) what mass of hydrogen gas is collected? answer in appropriate significant figures
Answers: 3
Zinc reacts with hydrochloric acid according to this reaction: zn(s) + 2hcl (aq) → zncl2(aq) + h2(g...
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