In a reaction, 0.700g of Ca is added to 75.0mL of 1.0M HCl. Once the reaction is completed as evidenced by the temperature change, the temperature of the solution of HCl had risen from 23.2OC to 88.2OC. Ca(s) + 2HCl(aq) Ca+2(aq) + H2(g) a. How many moles of Ca was present? b. What is the change in T of the mixture? c. What was the amount of heat gained by the solution of HCl? d. What was the amount of heat lost by the reaction? e. What was the heat of reaction per mole of Ca in units of J/mol?

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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In a reaction, 0.700g of Ca is added to 75.0mL of 1.0M HCl. Once the reaction is completed as evidenced by the temperature change, the temperature of the solution of HCl had risen from 23.2^OC to 88.2^OC.

Ca(s) + 2HCl(aq) Ca⁺²(aq) + H₂(g)

a. How many moles of Ca was present?

b. What is the change in T of the mixture?

c. What was the amount of heat gained by the solution of HCl?

d. What was the amount of heat lost by the reaction?

e. What was the heat of reaction per mole of Ca in units of J/mol?

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