A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution

Question:

A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to bring the volume to 500.0 mL of solution.

(a) Calculate the pH and pOH in the fi nal solution.

(b) Why would we wait for it to return to room temperature?

(c) If the mass of the water used to initially dissolve the sodium hydroxide were exactly 450 g and the temperature of the water increased by 8.865 °C, how much heat was given off by the dissolution of 15.0 g of solute? Assume the specific heat of the solution is 4.184 J/g · K. What is the molar heat change for the dissolution of sodium hydroxide (known as the enthalpy of solution, ΔH_sol)?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Answer rating: 100% (1 review)

a To calculate the pH and pOH we must first find the molarity of the sodium hydroxide solution Sodium hydroxide is completely dissociated in solution ...View the full answer

Answered By

Mary Boke

As an online tutor with over seven years of experience and a PhD in Education, I have had the opportunity to work with a wide range of students from diverse backgrounds. My experience in education has allowed me to develop a deep understanding of how students learn and the various approaches that can be used to facilitate their learning. I believe in creating a positive and inclusive learning environment that encourages students to ask questions and engage with the material. I work closely with my students to understand their individual learning styles, strengths, and challenges to tailor my approach accordingly. I also place a strong emphasis on building strong relationships with my students, which fosters trust and creates a supportive learning environment. Overall, my goal as an online tutor is to help students achieve their academic goals and develop a lifelong love of learning. I believe that education is a transformative experience that has the power to change lives, and I am committed to helping my students realize their full potential.

5.00+ 4+ Reviews 22+ Question Solved

Related Book For book-img-for-question

Chemistry Principles And Practice

ISBN: 9780534420123

3rd Edition

Authors: Daniel L. Reger, Scott R. Goode, David W. Ball

See More Books

Question Posted: Jan 09, 2024 09:01 AM

See More Questions

A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution

Question:

Step by Step Answer:

a To calculate the pH and pOH we must first find the molarity of the sodium hydroxide solution Sodium hydroxide is completely dissociated in solution ...View the full answer

Chemistry Principles And Practice

Students also viewed these Sciences questions