ame: Which of the following pairs of compounds is most likely to be immiscible?
ID: 1074635 • Letter: A
Question
ame: Which of the following pairs of compounds is most likely to be immiscible? a. Bry and CHs b H,0 and CH,CH OH ccci4 and HCO d. CHyOH and CH CH OH e. H,O and NH The resistance of a liquid to an increase in its surface area is a. surface tension. b. viscosity. 35. d. a meniscus. e. impossible. capilary action Water forms a concave meniscus in a glass tube because_ a. the cohesive forces between water molecules are larger than the adhesive forces between water 36. molecules and the glass wall. er er molecales and the giss vall a ner than the cohesive forces b. the adhesive forces between between water molecules. water molecules form hydrogen bonds with each other. water molecules repel cach other. the glass wall is wet. c. d. e. The correct H-N- H bond angle in NH, is 37. n the same as the H-O - H angle in water. d. less than 109.5 b, exactly 109.5% e. 120 c. greater than 109.5 38. All homonuclear diatomic molecules a. have polar bonds b. are polar c. are nonpolar d. cannot vibrate. e are liquids 9. What are the hybridizations of the carbon atoms in CH,CH COH, in order from left to right? d. sp, sp, sp e. sp, sp, sp Which of the following has a local molecular geometry about a carbon atom that is trigonal planar? a. CH,CH,OH b. CH,OH c.C2H d. CH,OCHsExplanation / Answer
34) Polar liquids are miscible in polar liquids. Nonpolar liquids are miscible in nonpolar liquids. like dissolves like .
a) Br2 and benzene , C6H5Br, which can be formed by electrophilic aromatic substitution of benzene using bromine. ( miscible)
b) HO has polar O-H bonds. CH3CH2OH has only C-C and C-H and C-O bonds. These liquids are miscible
ethanol CH3CH2OH and gas - confident - nonpolar - nonpolar keep in mind - like dissolves like ( miscible )
c) CCl4 is nonpolar only has London dispersive and H2CO is polar which all there London dispersive, dipolar and hydrogen bond. ( immiscible)
d) miscible , has polar bonds
e) A solution of ammonia in water is called ammonium hydroxide, NH4OH. ammonia has high solubility in water is due to hydrogen bonding with water molecules. (miscible)
35)Surface tension is the energy required to increase the surface area of a liquid by a given amount. The stronger the intermolecular interactions, the greater the surface tension. ... The viscosity of a liquid is its resistance to flow. Liquids that have strong intermolecular forces tend to have high viscosities
37) exactly 109.5 degrees
39) a ) sp3, sp3 , sp2
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