1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Naya [18.7K]
3 years ago
5

Choose the substance with the lowest viscosity. choose the substance with the lowest viscosity. f2chchf2 f2chch2f fch2ch2f f3cch

f2 f3ccf3
Chemistry
2 answers:
Maksim231197 [3]3 years ago
7 0

Answer : FCH_{2}CH_{2}F

Explanation : In the molecule of FCH_{2}CH_{2}F  the hydrogen bonding forces tend to resist any phase transition form liquid state to gaseous phase, and these hydrogen bonding forces are greater  usually when the hydrogen is bound to an electronegative atom like chlorine, fluorine,oxygen,etc. This then lowers the viscosity of the compound.

Viktor [21]3 years ago
7 0

The substance with lowest viscosity is \boxed{{\text{FC}}{{\text{H}}_{\text{2}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{F}}}.

Further explanation:

Viscosity is defined as the resistance of any liquid to flow. Stronger the intermolecular forces of attraction within the liquid, larger will be its viscosity.

Intermolecular forces:

The forces that exist between the molecules are known as intermolecular forces (IMF). They are electrostatic in nature and determine the bulk properties of the substances like melting and boiling points. Molecules are held in any substance due to these forces.

The various types of intermolecular forces are as follows:

1. Hydrogen bonding.

2. Ion-dipole forces.

3. Ion-induced dipole forces.

4. Dispersion forces

Hydrogen bonding:  

It is an attractive force that exists between hydrogen and more electronegative elements like N, O, F. It can either be intermolecular or intramolecular. Intermolecular hydrogen bonding is the one that occurs between different molecules. For example, the bond between HF and {{\text{H}}_{\text{2}}}{\text{O}} is an intermolecular hydrogen bond. Intramolecular hydrogen bonding occurs between various parts of the same molecule. Ortho-nitro phenol and salicylaldehyde show this type of bonding.

With an increase in the number of fluorine atoms in the compound, the polarity of the compound increases. Due to increase in polarity of compound, the tendency to form hydrogen bonds with water molecules also increases and that is the reason for increase in viscosity or the compound.

{{\text{F}}_{\text{3}}}{\text{CHCH}}{{\text{F}}_{\text{3}}} has the highest number of fluorine atoms among all the compounds, so it has highest tendency to form hydrogen bonding that attributes to its highest viscosity.

{\text{FC}}{{\text{H}}_{\text{2}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{F}} has lowest number of fluorine atoms among all the compounds, so it has lowest tendency to form hydrogen bonding that attributes to its lowest viscosity.

Learn more:

1. Determination of kinetic energy of the emitted electrons when cesium is exposed to UV rays:  

shttps://brainly.com/question/5031462

2. At what gas temperature would the average translational kinetic energy of a helium atom be equal to that of an oxygen molecule: brainly.com/question/9924094

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Kinetic Energy

Keywords: Kinetic energy, viscosity, intermolecular forces, hydrogen bonding, electronegative, fluorine, polarity, and hydrogen.

You might be interested in
Why must the ph ammonia buffer solution be stored and dispensed in the fume exhaust hood?
Vadim26 [7]

On the other hand ammonia is a very dangerous chemical which has a pungent smell and effect the eyes of the user. Thus it kept always in the fume exhaust hood for storing and dispensing function.  

The  pH of ammonia buffer contains ammonium hydroxide (NH₄OH) and a salt of ammonia with a  strong acid like (HCl) which produces, ammonium chloride (NH₄Cl) mixture. The evaporation rate of ammonia is so high at room temperature thus on opening of the buffer solution the ammonia get evaporated very fast and the concentration of ammonia decreases which affect the pH of the buffer solution.

Thus the reason to put ammonia buffer in fume hood is explained.


7 0
3 years ago
Particle size directly affects which of the following spil properties?
77julia77 [94]

Answer:

The size of soil particles is important. The amount of open space between the particles influences how easily water moves through a soil and how much water the soil will hold. Too much clay, in proportion to silt and sand, causes a soil to take in water very slowly. Such a soil gives up its water to plants slowly.

3 0
2 years ago
given that 32.0g sulphur contains 6.02×10^23 sulphur atoms,how many atoms are there in 2.70g of aluminum​
dangina [55]

Answer:

6.022 × 10²² atoms

Explanation:

Generally 1 mol of any element contains 6.02×10^23  atoms. The number 6.022 × 10²³ is known as Avogadro's number.

Mass of Aluminium = 2.70g

Molar mass = 27g/mol

Number of moles = Mass / Molar mass = 2.70 / 27 = 0.1 mol

1 mol =  6.022 × 10²³

0.1 mol = x

x = 6.022 × 10²³ * 0.1 = 6.022 × 10²² atoms

5 0
2 years ago
The study of the composition of matter is?
NemiM [27]

Chemistry. More specifically, analytical chemistry.

6 0
3 years ago
How many grams of potassium (K) contain 5.11 x 10^22 atoms of potassium?
Darina [25.2K]

The atomic mass of K is 39

from Avogadro's law

39g of K contains 6.02x10^23 atoms

therefore if

39=6.02x19^23

X=5.11×10^22

making X the subject of the formula

X= (5.11×10^22×39)÷6.02×10^23

X= 33g

7 0
2 years ago
Other questions:
  • At –45oC, 71 g of fluorine gas take up 6843 mL of space. What is the pressure of the gas, in kPa?
    6·1 answer
  • the buret is dirty and drops of NaOH cling to the side walls of the buret as it drained. How does this affect the result for NaO
    9·1 answer
  • Science Questions
    5·2 answers
  • Why is the formula for sodium thiosulfate Na2S2O3, not Na2SO3?
    9·1 answer
  • If you stirred some sugar in hydrochloric acid there would be a violent chemical reaction. This is because -
    8·1 answer
  • Why are groups 1 and 2 referred to as the s-block of the periodic table
    12·1 answer
  • Which element is most reactive among aluminium, boron, calcium and beryllium? Give reason.
    14·2 answers
  • Which of the following statements are true of groups on the periodic table?
    10·1 answer
  • Order these by size/complexity in descending order. (largest/most complex on top) Reorder answers
    12·1 answer
  • What are the 2 common uses for Polonium?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!