34.0 g The actual solubility of KCl in water at 20°C is given in a solubility table as your result compare to your experimental molality? Is it acceptable error? KC1/100 g water, which is equal to a molality of 4.56 m. How does %error = actual value-experimental value -×100% actual value 4056-00048 U.S4 At 50°C, the solubility of KCl in water is 42.6 g in 100 g water. What is th molality of KCl in water?

Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter16: Solutions
Section: Chapter Questions
Problem 14E
icon
Related questions
Question
I got 0.0048 mol/kg as the molarity. How do i solve this?
### Solubility and Molality of KCl in Water: A Study Guide

#### Solubility at 20°C
The actual solubility of potassium chloride (KCl) in water at 20°C is given as 34.0 grams of KCl per 100 grams of water. This corresponds to a molality of 4.56 m.  

#### Calculating Percent Error
To compare your experimental molality to this actual molality, you can calculate the percent error using the formula:
\[ \% \text{error} = \left( \frac{|\text{actual value} - \text{experimental value}|}{\text{actual value}} \right) \times 100\% \]

Below this explanation, there is a hand-written calculation that demonstrates the application of this formula:
\[ \left(\frac{4.56 - \text{experimental value}}{4.56}\right) \times 100\% \]

#### Solubility at 50°C
At 50°C, the solubility of KCl in water increases to 42.6 grams per 100 grams of water. You can determine the molality of KCl in water by using the solubility value.

#### Polarity of Liquids
From the miscibility table:
- Water is noted to be **polar** (handwritten note).
  
This indicates that the miscibility of liquids can help in determining their polarity:

- **Polar** substances typically mix well with other polar substances but not with nonpolar substances.
- **Nonpolar** substances mix well with other nonpolar substances but not with polar substances.

This exercise is fundamental in understanding the principles of solubility, molality, and the effect of temperature on solubility, as well as the importance of polarity in miscibility.

This guide should help you analyze similar problems and provide a foundational understanding of these chemical properties.
Transcribed Image Text:### Solubility and Molality of KCl in Water: A Study Guide #### Solubility at 20°C The actual solubility of potassium chloride (KCl) in water at 20°C is given as 34.0 grams of KCl per 100 grams of water. This corresponds to a molality of 4.56 m. #### Calculating Percent Error To compare your experimental molality to this actual molality, you can calculate the percent error using the formula: \[ \% \text{error} = \left( \frac{|\text{actual value} - \text{experimental value}|}{\text{actual value}} \right) \times 100\% \] Below this explanation, there is a hand-written calculation that demonstrates the application of this formula: \[ \left(\frac{4.56 - \text{experimental value}}{4.56}\right) \times 100\% \] #### Solubility at 50°C At 50°C, the solubility of KCl in water increases to 42.6 grams per 100 grams of water. You can determine the molality of KCl in water by using the solubility value. #### Polarity of Liquids From the miscibility table: - Water is noted to be **polar** (handwritten note). This indicates that the miscibility of liquids can help in determining their polarity: - **Polar** substances typically mix well with other polar substances but not with nonpolar substances. - **Nonpolar** substances mix well with other nonpolar substances but not with polar substances. This exercise is fundamental in understanding the principles of solubility, molality, and the effect of temperature on solubility, as well as the importance of polarity in miscibility. This guide should help you analyze similar problems and provide a foundational understanding of these chemical properties.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Solutions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Chemistry: An Active Learning Approa…
Introductory Chemistry: An Active Learning Approa…
Chemistry
ISBN:
9781305079250
Author:
Mark S. Cracolice, Ed Peters
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
General, Organic, and Biological Chemistry
General, Organic, and Biological Chemistry
Chemistry
ISBN:
9781285853918
Author:
H. Stephen Stoker
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
EBK A SMALL SCALE APPROACH TO ORGANIC L
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:
9781305446021
Author:
Lampman
Publisher:
CENGAGE LEARNING - CONSIGNMENT