Register
When 3.2g of ammonium chloride is dissolved in 75g of water, the temperature of the solution decreases from 22.8 C to 20.1 C. What is the energy of dissolution of NH4Cl per mole?
53.2k views
2 votes
When 3.2g of ammonium chloride is dissolved in 75g of water, the temperature of the solution decreases from 22.8 C to 20.1 C. What is the energy of dissolution of NH4Cl per mole?

User Alfie Hanssen
by
8.4k points

2 Answers

3 votes

14.8 kJ/mol ...........

User Ian Walter
by
8.1k points
1 vote
Dissolving NH4Cl in H2O is an endothermic solution process. You measure how much it cools the solution by the temperature of the H2O.
q = mass H2O x specific heat H2O x (Tfinal-Tinitial)
The q you measure is for 3.2g/53.4g or q/0.0599 mol. You want to convert that to q/1 mol.
User Kyle VanderBeek
by
8.2k points
← Prev Question Next Question →

Related questions

User Steve Reeder
asked May 27, 2022 90.3k views
Write the chemical equation for the dissolution of NH4Cl in water including the Heat term
Steve Reeder asked May 27, 2022
by Steve Reeder
8.1k points
1 answer
2 votes
90.3k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

How do you balance __H2SO4 + __B(OH)3 --> __B2(SO4)3 + __H2O
Can someone complete the chemical reactions, or write which one do not occur, and provide tehir types? *c2h4+h2o *c3h8 + hcl *c2h2+br2 *c4h10+br2 *c3h6+br2
As an object’s temperature increases, the ____________________ at which it radiates energy increases.
What is the evidence of a chemical reaction when the fireworks go off
Which of the following statements does not describe a physical property of a piece of chalk A. Chalk is solid B.chalk can be broken into pieces C. Chalk is white D. Chalk will bubble in vinegar
Link Copied!