1. Zinc metal reacts with aqueous hydrochloric acid to produce zinc(II) chloride and hydrogen gas. a. Write a balanced chemical equation including phase tags for this reaction. b. What volume of 0.118 M HCI is required to completely react with 0.103 g of solid zinc?

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1. Zinc metal reacts with aqueous hydrochloric acid to produce zinc(II) chloride and hydrogen gas.
a. Write a balanced chemical equation including phase tags for this reaction.
b. What volume of 0.118 M HCI is required to completely react with 0.103 g of solid zinc?
c. When 0.103 g of solid zinc is combined with enough hydrochloric acid to make 50.0 mL of solution in a
coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.5 °C to
23.7°C. Determine qrn using 1.0 g/ml for the density of the solution and 4.184 J/g°C as the specific heat
of the solution.
d. Determine AHn when 1.00 mole of zinc reacts and add this information to your balanced chemical
equation to make it a thermochemical equation.
Use your thermochemical equation to determine AH.m for the following reactions:
е.
i.
2 moles of Zn are reacted with excess hydrochloric acid
ii.
5.67 g of Zn is reacted with excess hydrochloric acid
iii.
The reverse reaction occurs.
Transcribed Image Text:1. Zinc metal reacts with aqueous hydrochloric acid to produce zinc(II) chloride and hydrogen gas. a. Write a balanced chemical equation including phase tags for this reaction. b. What volume of 0.118 M HCI is required to completely react with 0.103 g of solid zinc? c. When 0.103 g of solid zinc is combined with enough hydrochloric acid to make 50.0 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.5 °C to 23.7°C. Determine qrn using 1.0 g/ml for the density of the solution and 4.184 J/g°C as the specific heat of the solution. d. Determine AHn when 1.00 mole of zinc reacts and add this information to your balanced chemical equation to make it a thermochemical equation. Use your thermochemical equation to determine AH.m for the following reactions: е. i. 2 moles of Zn are reacted with excess hydrochloric acid ii. 5.67 g of Zn is reacted with excess hydrochloric acid iii. The reverse reaction occurs.
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