Question

Zinc reacts with hydrochloric acid according to the reaction equation

Zn(s) + 2HCl(aq) -> ZnCl2(aq) + H2(g)

How many milliliters of 6.50 M HCl(aq) are required to react with 3.05 g of Zn(s)?

Answer #1

Number of moles of Zn = 3.05 g / 65.38 g/mol = 0.0467 mole

from the balanced equation we can say that

1 mole of Zn requires 2 mole of HCl so

0.0467 mole of Zn will require

= 0.0467 mole of Zn *(2 mole of HCl /1 mole of Zn)

= 0.0934 mole of HCl

molarity of HCl = number of moles of HCl / volume of solution in L

6.50 = 0.0934 / volume of solution in L

volume of solution in L = 0.0934 / 6.50 = 0.0144 L

1L = 1000 mL

0.0144 L = 14.4 mL

Therefore, the volume of solutiion is 14.4 mL

Zinc reacts with hydrochloric acid according to the reaction
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an ore containing 37.0% Zn(s) by mass?

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solution in a coffee-cup calorimeter, all of the zinc reacts,
raising the temperature of the solution from 21.7 ∘C to 24.4
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following balanced equation. Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) When
0.107 g of Zn(s) is combined with enough HCl to make 51.6 mL of
solution in a coffee-cup calorimeter, all of the zinc reacts,
raising the temperature of the solution from 22.2 ∘C to 24.3 ∘C.
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following balanced equation. Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) When
0.119 g of Zn(s) is combined with enough HCl to make 53.4 mL of
solution in a coffee-cup calorimeter, all of the zinc reacts,
raising the temperature of the solution from 21.7 ∘C to 24.5 ∘C.
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the density of the solution and 4.18 J/g⋅∘C as the specific heat
capacity.)

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following balanced equation. Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) When
0.106 g of Zn(s) is combined with enough HCl to make 50.6 mL of
solution in a coffee-cup calorimeter, all of the zinc reacts,
raising the temperature of the solution from 21.5 ∘C to 24.4 ∘C.
Find ΔHrxn for this reaction as written. (Use 1.0 g/mL for the
density of the solution and 4.18 J/g⋅∘C as the specific heat
capacity.)

Zinc metal reacts with hydrochloric acid according to the
following balanced equation. Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) When
0.106 g of Zn(s) is combined with enough HCl to make 54.5 mL of
solution in a coffee-cup calorimeter, all of the zinc reacts,
raising the temperature of the solution from 21.6 ∘C to 24.5 ∘C.
Find ΔHrxn for this reaction as written. (Use 1.0 g/mL for the
density of the solution and 4.18 J/g⋅∘C as the specific heat
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equation
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Zinc metal reacts with hydrochloric acid according to the
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Zn(s) + 2HCl(aq) -> ZnCl2(aq) + H2(g)
the hydrogen gas is collected over water at a temperature of
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degrees C if 15.11 g of zinc reacted with excess hydrochloric
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