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Terms in this set (16)What factor causes changes between;The solid and liquid state? The factor that causes changes between the molecules in the solid state and the liquid states are the strength of the intermolecular forces. Molecules in the solid state are held by stronger attractive forces (intermolecular forces) than in the liquid phase. So to change from the solid to the liquid phase heat is applied to break this attractive force. What factor causes changes between; The liquid and gas state? Same relationship exists between the liquid and the gas phase. The attractive forces holding the molecules in the liquid face are stronger that than those holding the molecules in the gas phase. So on application of heat, the attractive forces are broken and the substance will change from the liquid to the gas phase. What is the difference between the following intermolecular forces? The hydrogen bond is a sort of super dipole-dipole force that occur only in molecules that consist of a bond in which hydrogen is bonded directly to F, O, and N. The H atom will have a fairly large partial positive charge (δ+), while the F, O, or N atoms will have a fairly large partial negative charge (δ-) because of their large electro negativity. The result is a strong attraction between the H atom of one molecule and the F, O, or N on its neighbors, called hydrogen bonding. But dispersion force is an intermolecular force that occurs in molecules without a permanent dipole - dipole force of attraction. This force occurs as a result of the development of an instantaneous dipole - dipole force of attraction between neighboring molecules due to the fluctuation of electron on the molecule. This force increases with increase in mass. What is the difference between the following intermolecular forces? Dipole - dipole force and dispersion force. The dipole - dipole force of attraction is that force that exists in all polar molecules. The permanent dipole of neighboring molecules interacts. The positive end of one is attracted to the negative end of another. But dispersion force is an intermolecular force that occurs in molecules without a permanent dipole - dipole force of attraction. This force occurs as a result of the development of an instantaneous dipole - dipole force of attraction between neighboring molecules due to the fluctuation of electron on the molecule. What is ion - dipole force? And why is it important? Ion - dipole force of attraction is the intermolecular force between a positive ion of an ionic compound and the negative poles of a polar solvent e.g. water and the negative ion of an ionic compound and the positive pole of a polar molecule. It is important because it is the force that is responsible for ionic compounds to form solutions. What is a phase diagram? Draw a generic phase diagram and label its important features. A phase diagram is simply a map of the phases of a substance as a function of pressure (on the y-axis) and temperature (on the x-axis). Simple Cube ... Body-Centered Cube ... Face-Centered Cube ... What kind of molecular force is present in N2? Dispersion Force What kind of molecular force is present in NH3? Hydrogen bonding and dipole-dipole force of attraction What kind of molecular force is present in CO? Dipole-Dipole force of attraction What kind of molecular force is present in CCl4? Dispersion Force For each pair of compounds pick the one with the highest boiling point. Explain your reasoning. CH3OH or CH3SH? CH3OH-Why because the CH3OH molecules are held by dispersion, hydrogen bonding and dipole -dipole force of attraction but the molecules of CH3SH are held only by the weaker dispersion and dipole-dipole forces of attraction. For each pair of compounds pick the one with the highest boiling point. Explain your reasoning. CH3OCH3 or CH3CH2OH? Why because the CH3CH2OH molecules are held by dispersion, hydrogen bonding and dipole -dipole force of attraction but the molecules of CH3OCH3 are held only by the weaker dispersion and dipole-dipole forces of attraction. For each pair of compounds pick the one with the highest boiling point. Explain your reasoning. c. CH4 or CH3CH3? Both molecules are held by weak dispersion force, but dispersion force increases with increase in molar mass, so it is higher in CH3CH3 therefore higher boiling point than in CH4 molecule. Students also viewedMastering Chemistry Chapter 1110 terms zeebey Classification of Types of Solids18 terms AvaRowling Chem ch 1126 terms annakatherynn_ Assignment 1: 11.1-11.523 terms Jimisaw Sets found in the same folderEnhanced Gen Chem Chapter 11 Intermolecular Forces18 terms robwinfieldPlus mastering chem chp 618 terms andreajade4 MOLECULAR Geometry13 terms dylan_discenza OCR A level Chemistry47 terms Giselle_Burluka Other sets by this creatorTop 100 Drugs (2018)100 terms jonah_mayers Biochem Final Unit135 terms jonah_mayers BIO 302 Exam 239 terms jonah_mayers BioChem Unit 216 terms jonah_mayers Verified questions
chemistry What is the smallest number of possible products in a decomposition reaction? Verified answer
physics Traffic shock wave. An abrupt slowdown in concentrated traffic can travel as a pulse, termed a shock wave, along the line of cars, either downstream (in the traffic direction) or upstream, or it can be stationary. Figure 2-23 shows a uniformly spaced line of cars moving at speed $v=25.0 \mathrm{~m} / \mathrm{s}$ toward a uniformly spaced line of slow cars moving at speed $v_s=5.00 \mathrm{~m} / \mathrm{s}$. Assume that each faster car adds length $L=12.0$ $\mathrm{m}$ (car length plus buffer zone) to the line of slow cars when it joins the line, and assume it slows abruptly at the last instant. For what separation distance $d$ between the faster cars does the shock wave remain stationary? Verified answer chemistry For each phase or form, identify the matter as liquid (L), gas (G), or both (B): a. _____ definite volume but changes shape to fit the shape of the container. b. _____ generally has the lower density of the two forms. c. _____ expands to completely fill any container. d. ______ bonds between atoms are not completely broken. e. may be called a fluid. f. _____ molecules of this form have more energy. g. ______ force exerted on this form is transmitted as pressure in all directions. Verified answer
physics By what percentage is the electron mass changed in using the reduced mass for the hydrogen atom? What would the reduced mass be if the proton had the same mass as the electron ? Verified answer Recommended textbook solutions Quantitative Chemical Analysis8th EditionDaniel C. Harris 921 solutions Exploring Chemical Analysis4th EditionDaniel C. Harris 564 solutions Quantitative Chemical Analysis8th EditionDaniel C. Harris 921 solutions Exploring Chemical Analysis4th EditionDaniel C. Harris 564 solutions Other Quizlet setsGenetics Intro11 terms kristin_adams Africa Study Guide13 terms elisa_bodnar Diencephalon41 terms charlotte_sweere Ch. 2 Types of Markets and Offerings93 terms Mitchell_Ny Which compound will have the highest boiling point CH4 CH3CH3 CH3CH2OH CH3CH3?CH3CH2OH has more dispersion forces than CH3OH, so it has the highest boiling point. Melting points of the hydrogen halides increase in the order HCl < HBr < HF < HI.
Which has a higher boiling point CH3F or CH4?-These require more energy to overcome than London forces. -Hence more energy is needed to overcome the intermolecular forces in CH3F, giving it a higher boiling point. CH4 and NH3 have very similar molar masses, yet methane boils at 109K while ammonia has a boiling temperature of 240K.
Does CH4 or CH3CH3 have a higher vapor pressure?Between CH4 C H 4 and CH3CH3 C H 3 C H 3 , the intermolecular forces are weaker in CH4 C H 4 because it only contains one carbon atom. Therefore, CH4 C H 4 has the highest vapor pressure.
Which would have a higher boiling point CH4 or CH3OH?Thereby it is concluded that CH3OH has strong interaction and high electronegativity difference due to this CH3OH has a high boiling point. In the case of CH4, it has only London dispersion forces of attraction which are the weakest intermolecular forces. Hence, CH4 has the least boiling point among all.
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Which has a higher boiling point CH3CH3 or CH4?
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