9. Hydrogen bonding is the strongest inter-molecular force which occurs when hydrogen is directly connected to most electronegative elements of periodic table (nitrogen,oxygen and flourine)
dipole dipole force of attraction is a type of van der waal force in which polar molecules(molecules which are polar due to electro-negativity difference in elements within the compound) are attracted to each other due to their difference in polarity
London dispersive forces is th weakest force of attraction in which non-polar molecules attract each other due to the position of electrons present in molecules
a) CH3OH - in this compound,oxygen is connected to hydrogen,so hydrogen bonding takes place,so it is incorrect
b) NH3 - in this compound, nitrogen is connected to hydrogen,so hydrogen bonding takes place, it is also incorrect
c) H2S - it is a polar molecule,due to electronegativity difference between hydrogen and sulfur,dipole-dipole force occurs,so it is incorrect
d)CH4 - inspite of electronegativity difference,shape of CH4 makes it non polar as polarity gets cancelled out,so only london force occurs in this compound,therefore it is the correct option
10. True,Fume hood is a machine which captures dust,volatile and highly toxic material and makes lab safe,so volatile substance should be used in fume hood
11.True,water and food regulates the blood circulation in body due to which tendency of feeling unconscious reduces,so eat and drink before going to lab. DO NOT EAT OR DRINK ANYTHING IN LAB
Question 9 0.2 pts Which one of the following substances has London dispersion forces as its...
Question 6 0.2 pts Which statement about intermolecular forces is true? Only occur in ionic bonds. They have to be overcome to decompose a substance. These forces hold atoms together in a molecule. They are responsible for the physical properties of matter. Question 7 0.2 pts What intermolecular force is responsible for the attraction between an ion and a polar molecule? O Dipole-dipole interaction Hydrogen bonding lon-dipole interaction London dispersion forces Question 8 0.2 pts of liquids will be related...
dentify the predominant intermolecular force in each of these substances. Hydrogen bonding Dipole-dipole Dispersion (London) forces Answer Bank CH OH CHECCH) OH CH,COCH about us Careers privacy policy terms of use contact us help
Which of the following compounds will only have London dispersion intermolecular attractions? {Hint: look for non-polar molecules). O CO2 O CH3F O CH3OH O OCI2 O Naci QUESTION 4 What is the strongest (most attractive) intermolecular force in CH3F? O hydrogen bonding O London dispersion forces O ion-dipole attraction O jonic bonding O dipole-dipole attraction
Question 25 6.67 pts The Lewis structure for a compound is shown below. Which intermolecular forces would you expect it to have? C. HHHH London dispersion, dipole-dipole, and hydrogen bonding forces London dispersion and dipole-dipole forces Dipole-dipole forces only London dispersion forces only
Which of the following molecules is nonpolar? a. H2 b. HF c. HCl d. HI e. HBr Which of the following molecules can participate in Hydrogen bonding? a. HF b. CO2 c. CH4 d. H2S Which of the following molecules is polar? a. H2O b. CO2 c. CH4 d. N2 e. None of the above In lab, temperature changes caused by ________________ of liquids will be related to the strength of intermolecular forces. a. Evaporation b. Mass c. Density d....
h of the following statements is NOT true? London dispersion forces are present in all substances but are the only significant intermolecular forces in nonpolar substances. ) The density of the liquid state of a substance is greater than the density of its gaseous state. The thermal energy in a liquid allows the atoms within molecules to completely overcome the attractions between them so they flow. Most liquids can be converted to a gas by reducing pressure and/or heating. The...
Question 22 1.5 pts Identify the strongest intermolecular force in the compound KHSO4. lonic forces Dipole-dipole O Hydrogen bonding Olon-dipole O London dispersion forces
1. Which one of the following substances has dispersion forces as its only intermolecular force? (A) CH3OH (B) NH (C) H2S (D) Brz
5:02 .. LED Exit Question 5 1.25 pts What intermolecular forces are important for the molecule below? [Check all that apply.] Dipole-Dipole Hydrogen Bonding lon-Dipole London Dispersion Forces None of these
Which of the following best describes London dispersion forces. Question 1 options: the intermolecular forces that exist when ions from an ionic compound are attracted to the dipole of polar molecules in a mixture. involves molecular orientations in which the positive end of one dipole is near the negative end of another forces that exist only between molecules that contain hydrogen atoms bonded to highly electronegative atoms such as O, N, F. Interactions between temporary dipoles cause atoms to be...