Log In Registration
Ask an expert
Chemistry
03.07.2022 06:54
119
478
9
Solved by an expert

Determine the molality of a solution of benzene dissolved in toluene (methylbenzene)

Determine the molality of a solution of benzene dissolved in toluene (methylbenzene) for which the mole fraction of benzene is 0.176. give your answer to 2 decimal places
Show Answers
crookdamian21
crookdamian21
4,4(85 marks)

2.32 m

Explanation:

So, according to definition of mole fraction:

Mole\ fraction\ of\ benzene=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}

Mole fraction = 0.176

Applying values as:

0.176=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}

0.176\times ({n_{benzene}+n_{toluene}})={n_{benzene}}

So,

0.176\times n_{toluene}}=0.824\times {n_{benzene}}

{n_{benzene}}=\frac {0.176}{0.824}\times n_{toluene}}

{n_{benzene}}=0.2136\times n_{toluene}}

Also, Molar mass of toluene = 92.14 g/mol

Thus,

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Mass=92.14\times n_{toluene}}\ g

Also, 1 g = 0.001 kg

So,

Mass\ of\ toluene=0.09214\times n_{toluene}}\ kg

Molality is defined as the moles of the solute present in 1 kg of the solvent.

It is represented by 'm'.

Thus,  

Molality\ (m)=\frac {0.2136\times n_{toluene}}{0.09214\times n_{toluene}}

Molality of benzene = 2.32 m

Jacques1b
Jacques1b
5,0(9 marks)

The answer is in the photo. I can only upload it to file hosting. link below.

cutt.ly/5zdtAzt

Popular Questions about the subject: Chemistry

What do you think of when you hear the word science? How would...
What do you think of when you hear the word science? How would you define it?...
Chemistry
21.09.2021 11:41
T challa s ship has a length of 9 meters. Convert this to centimeters....
T challa s ship has a length of 9 meters. Convert this to centimeters. (There are 100 cm per m) Group of answer choices...
Chemistry
20.11.2020 14:34
Blue Ivy s kiddie pool is 7 feet long. How many meters long is...
Blue Ivy s kiddie pool is 7 feet long. How many meters long is the kiddie pool? (3.28 ft per meter)...
Chemistry
27.01.2022 17:43
Je veux une petite résumé sur les propriétés des gaz en chimie...
Je veux une petite résumé sur les propriétés des gaz en chimie organique svpp​...
Chemistry
21.11.2021 02:24
HELP DUMB SMART AT OTHER THINGS PLZ...
HELP DUMB SMART AT OTHER THINGS PLZ...
Chemistry
14.09.2020 23:15
Both light and sound travel in the form of waves that are created...
Both light and sound travel in the form of waves that are created by a transfer of...
Chemistry
24.04.2022 18:27
Write a narrative about the full journey a raindrop makes in the...
Write a narrative about the full journey a raindrop makes in the Water Cycle....
Chemistry
22.03.2022 17:08
From the middle of the periodic table, in which direction would...
From the middle of the periodic table, in which direction would you look to find the most reactive substances? 1.up 2.down 3.left 4.right...
Chemistry
11.06.2023 08:09
Put the following elements in order, with the element having the...
Put the following elements in order, with the element having the most valence electrons at the top of your list and the element with the fewest valence electrons at the...
Chemistry
01.06.2020 11:00
Consider the system A(g) -- B(g). a) Assuming that GoA = 8,996...
Consider the system A(g) -- B(g). a) Assuming that GoA = 8,996 J/mol and GoB = 11,718 J/mol, find the value of the equilibrium constant for the reaction. b) Calculate the...
Chemistry
23.05.2020 04:12

New questions by subject

How do you know if someone likes you...
How do you know if someone likes you...
Arts
14.03.2023 01:21
Elliot and shanna are both soccer goalies. elliot saves 3 goals...
Elliot and shanna are both soccer goalies. elliot saves 3 goals out of 4. shanna saves 7 goals out of 11. who has the better average. explain....
Mathematics
25.04.2020 15:13
In today s modern era with cell phones, gps devices, and helicopters,...
In today s modern era with cell phones, gps devices, and helicopters, is the theme of man vs. nature still relevant? explain. 3-4 sentences : )...
English
27.06.2021 04:58
Physical fitness involves the proper functioning of which body...
Physical fitness involves the proper functioning of which body systems? select all that apply. auditory circulatory respiratory integumentary muscular reproductive...
Physics
13.03.2022 17:33
What was the main purpose of the declaration of independence? a....
What was the main purpose of the declaration of independence? a. to propose a former set of laws for the american colonies b. to remove the american colonies from british...
English
21.08.2022 00:22
Species are species that are susceptible to endangerment in the...
Species are species that are susceptible to endangerment in the future...
Geography
10.09.2020 22:13
Troy ulman received his annual savings account statement, showing...
Troy ulman received his annual savings account statement, showing $78.75 in interest. if his savings account balance was $2,100 at the beginning of the year, what is his...
Mathematics
09.01.2022 08:33
There are 14 women and 7 men if a cafe. what is the probability...
There are 14 women and 7 men if a cafe. what is the probability that it will be a women...
Mathematics
27.10.2020 14:14
There are 6 dogs at a doggie daycare on friday. if 1/3 of the dogs...
There are 6 dogs at a doggie daycare on friday. if 1/3 of the dogs are large dogs, 1/6 of the dogs are medium-sized dogs,and the remaining dogs are small. how many dogs...
Mathematics
25.06.2021 15:10
Why american colonists was seeking independence from britain...
Why american colonists was seeking independence from britain...
History
04.06.2020 05:33
Find out answers to questions
from an AI-bot
Get full access
Answers
Themes
Family and Home Sport Other Dating, Love, Relationships Health and Medicine Science and Technology Cities and Countries Travel and tourism Food and Cooking Philosophy Style and Beauty Animals and plants Business and Finance Construction and repair Leisure and Entertainment Legal consultation Goods and services Society and Politics Photography and Videography Auto and Moto Art and Culture Computers and Internet Horoscopes, Magic, Divination Work and Career Business Law Spanish SAT Engineering Social Studies Computers and Technology World Languages Mathematics French Biology Arts History Geography Health Chemistry Medicine Physics English Advanced Placement (AP) German
#
#
#
#
# #

We expand our knowledge with many expert answers

Answers