Use your thermochemical equation to determine AH for the following reactions: е. i. 2 moles of Zn are reacted with excess hydrochloric acid 5.67 g of Zn is reacted with excess hydrochloric acid ii. ii. The reverse reaction occurs.
Use your thermochemical equation to determine AH for the following reactions: е. i. 2 moles of Zn are reacted with excess hydrochloric acid 5.67 g of Zn is reacted with excess hydrochloric acid ii. ii. The reverse reaction occurs.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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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 HCl 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 q_rxn 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 ΔH_rxn when 1.00 mole of zinc reacts and add this information to your balanced chemical equation to make it a thermochemical equation.
e. Use your thermochemical equation to determine ΔH_rxn for the following reactions:
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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