Because water molecules can form a variety of hydrogen bonds with each other, water molecules tend to have more configurations when they are by themselves than when they are mixed with other molecules that cannot form hydrogen bonds. Imagine that the interactions between water molecules and the molecules of a non polar substance A (W-A interactions) are stronger than the W-W and A-A interactions. In this case one can predict that:
Because water molecules can form a variety of hydrogen bonds with each other, water molecules tend...
QUESTION 8 When phospholipids are mixed with water, they spontaneously form lipid bilayers. Why is this energetically favorable A. None of these answers are correct B. Hydrogen bonds form between neighboring polar head groups of phospholipids, drawing them together. C. Van der Waals interactions between the hydrocarbon chains are stronger than hydrogen bonding interactions. D. Water molecules would otherwise form cage-like structures around the hydrocarbon chains, decreasing entropy. E. All of these answers are correct
Part A Water molecules hire a polarity, which allows them to be electrically attracted to other water molecules and other polar molecules by weak chemical bonds known as View Available Hints) ionic bonds Van der Waals interactions polar covalent bonds nonpolar covalent bonds hydrogen bonds Submit
Atoms can bond to other atoms to make molecules. Atoms sometimes break these bonds and form them in a different way. For example, it is possible to take two molecules of hydrogen (H_2) and one molecule of oxygen (O_2), put them near one another, give them a little spark to help them start a reaction, and you will end up with two molecules of water (H_2O). Do you see what happened? Some of the H-H bonds and the O-O bonds...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed on page 15.) Experiment 2 Intermolecular Forces There are three general types of intermolecular forces. All substances exhibit London Dispersion Forces (LDF), and they are generally the weakest of the three types. These London forces are due to the attractions between small, temporary dipoles that arise from the constant, random movement of the electrons in a substance. As molar mass increases, the size of...
9. Draw all of the possible hydrogen bonds between the following molecule and water molecules. Indicate the hydrogen bonds with dotted lines. :N-CEN: H 10. Polar molecules can contain more than one type of attractive force. Fill in the following table answering the question "Is this attractive force present between molecules of the given compound?" Write yes or no for each force. Molecule Ionic Attraction H-Bond Dipole-Dipole London CHCl3 CH3OH NH2 65- *NH3-C-COO 11. For each of the following pairs...
Which of the following molecules can form hydrogen bonds? Select all that apply. A. NH3 B. NaH C. DNA (this is a large polar molecule with the lots of oxygen and nitrogen atoms) D. H2O E. CH4 F. HI G. BH3 H. benzene (C6H6) Note: According to the Fisher Scientific MSDS, the solubility of benzene in water is very low so it is effectively insoluble. Solubility: 0.180 g/100 ml @ 25°C https://fscimage.fishersci.com/msds/02610.htm
Which molecules shown on the right will form strong hydrogen bonds with water? Circle the correct ones. C. B. HH н н HI -6- HH I-0- H-6-SH I-o-I Hc-c- 1. Which molecules shown on the right will form strong hydrogen bonds with water? Circle the correct ones. I-O-I I II 0 H-6-0- --o- -c-c-OH HH
7. If an ionic bond is stronger than a dipole-dipole interaction, how can water dissolve an ionic compound? None of these The ion-dipole interactions of a bunch of water molecules gang up on the strong ionic bond and pull it into the solution. The ions never overcome their interatomic attraction and therefore are not soluble. The ionic bond is weakened by the ion-dipole interactions and ionic repulsion ejects the ions from the crystal. The ion-dipole...
please explain the answer Which of the interactions in the figure are hydrogen bonds that can form between vitamin C and surrounding water molecules? Drag the appropriate labels to their respective targets. Labels can be used once, more than once, or not at all. Reset Help Н н a hydrogen bond H OH a hydrogen bond not a hydrogen bond Η. O H-ö Η a hydrogen bond a hydrogen bond H СС 8: :: 10: Η H Н Н a...
identfiy the predominant intermolecular forces in each of the given substance Ionic interactions hydrogen bonding van der waals interactions Answer Bank KCI NH, CH П н, сн, Н,0 но СН3СНОН H. Urea is an organic compound widely used as a fertilizer. Its solubility in water allows it to be made into aqueous fertilizer solutions and applied to crops in a spray. What is the maximum theoretical number of water molecules that one urea molecule can hydrogen bond with? Ignore shape...