which of these has a dipole and why : CHCl3 PH3 BCl3 BeCl2 CS2 NCl3 CH3OH?
100646
Trichloromethane (CHCl3) as a) it is asymmetrical & b) the electronegativity of the Cl 'pulls' the eletron density away from the C-H bond
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There are three possible answers:\n\n1,1-diiodoethylene, which is I2C=CH2\ncis-1,2-diiodoethylene, which is IHC=CHI, with both iodines on the same side\ntrans-1,2-diiodoethylene, which is also IHC=CHI, with the iodines on opposite sides of the molecule
745688
To the first answer----WHAT? What does hydrogen bonds have to do with polarity? Ever heard of dipoles? Why do the need hydrogen bonds when the electronegativity is what is causing the polarity? Please, don't answer question you have no idea about. Anyone can look up stuff and copy and paste. NaCl  doesn't form hydrogen bonds but is VERY solube.\n\nNow, to answer the question. I think what you are eluding to by using "most," is the majority of them. What it boils down to is the molecule is too big. If you have like CH3-Cl, it is a small molecule and the polarity is spread of a small place, thus making it polar. Now, if you have something like C-C-C-C-C-C-C-C-C-C-Cl, the only part that is polar is the Cl part and the rest of the molecule is not, thus will not interact in water.
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chlorine, Cl2, bromine, Br2, or iodine, I2 or fluorine
226109
It is lithium Chloride i.e. LiCl\nIt is an covalent compound rather than being an ionic compound. It is define by FAJAN's rule
426896
BaCO_3+HCl - BaCl_2+CO_2+H_2_O\n\nbalance it
133194
This usually happens in solution, the Chlorine is a chloride ion.\n\nAgNO3(aq) + Cl-(aq) --> AgCl(s) + NO3-(aq)
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3 Sn(NO3)4 + 4 AlCl3 --> 4 Al(NO3)3 + 3 SnCl4
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a) Toluene and Cl2 form p-chlorotoluene and HCl in presence of AlCl3\nb) nitrobenzene + Cl2 -(AlCl3)-> m-chloro-nitrobenzene\nc) chlorobenzene + Cl2 -(AlCl3)-> p-dichlorobenzene\nd) 1-(3-chlorophenyl)ethanone\ne) 3-chlorophenyl acetate\nf) methyl 3-chlorobenzoate\n\nOrganic Chem rocks!
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Xavier is dead wrong. NH4+ is tetrahedral. Most of his answer applies to NH3, which is trigonal pyramidal, and not the same thing as NH4+.\n\nPolar molecules have a large net electrical dipole moment. In a sense, the dipole moment tells you how close you are to becoming an ionic compound. If there is no net dipole moment, the compound is completely non-polar. On the other extreme, if it's an ionic compound, it's completely polar.\n\nLook carefully at your question. NH4+ is an ion, not a molecule, and the terms "polar" and "non-polar" don't really apply to ions. The reason is that ions must be part of an ionic compound, and the ionic compound would be considered polar by definition. For example, (NH4)Cl is an ionic compound and therefore very polar, but asking whether NH4+ is polar is no different than asking whether Cl- is polar.\n\nA couple of good textbooks for further information and examples would be "Organic Chemistry" by Solomons and "Organic Chemistry" by Peter Vollhardt.
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Nope, it's answer A.  The first compound in D has two chlorines on it, not a chiral compound.
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1) Zinc Chloride\n2) Copper (II) Sulphate\n3) there is no such thing as NH4OH, but oh well..\n    Ammonium Hydroxide\n4) Iron (III) Sulphide\n5) Aluminium Phosphate\n6) Lead (II) Nitrate\n7) Sulphur hexafluoride\n8) Sodium Sulphate\n9) Mercury (II) oxide\n10) Potassium Clorate (V)\n11) Tin (II) Choride\n12) Iron (II) hydroxide\n13) Mercury (II) Sulphate\n14) Carbon Dioxide
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PCl3 has the same shape as NH3 (tetrahedral with P in the center, the 3 Cl at the 3 corners and a lone pair at the fourth corner) So the polar covalent bonds don't cancel out each other\n\nSO3 is planar trigonal and thus the dipole moments cancel out each other and it is non-polar\n\nCF4 has a tetrahedral shape and since all bonds are the same they cancel each others dipole moment;the molecule is nonpolar\n\nCH2F2 has the approximately the same shape as CF4, but since not all bonds are the same their angle is a bit different and the sum of the dipole moments is not zero; thus the molecule is polar\n\nSO2 is a bent molecule (because of the sulphur's lone pair), think of it in a way as water with S in the place of O and O in the place of H so it is polar.\n\nCO2 is a linear molecule (O=C=O) so the dipole moments of the two identical polar bonds cancel out each other; the molecule is nonpolar\n\nO=C=S has different polar bonds, so although they have opposite directions the result will be a slight dipole moment, so the molecule is polar.\n\nIn all your questions you have to compare a polar and a nonpolar molecule. Of course the one with the strongest dipole-dipole interactions in each case is the polar molecule.
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If the molecule has O,N,F,or Cl then most likely it is polar.  Look at the periodic chart and remember that the elements in the upper right are the most electronegative, so they want electrons.  When these elements are in a compound with other atoms such as C and H they will pull electrons closer making a dipole moment.  \n\nThe only real trick is looking at the geometry of the molecule, if there is more than one electronegative atom pulling in opposite directions then the dipole is canceld.  Such as O=C=O which is liniar.\n\nLook at an electronegativity chart you will see what I mean
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1.) ClO2, because the O=Cl=O angle is 90deg whereas O=S=O is linear, 180deg\n2.) HCl, because Cl is more electronegative than Br\n3.) SCl2, because the Cl-S-Cl angle is 90deg, whereas Cl-Be-Cl is linear, 180deg\n4.) AsF3, because As sits at the top of a tripod of F atoms, whereas AsF5 is symmetrical.
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CoCl3.6NH3 yellow 3 [Co(NH3)6]Cl3 \nCoCl3.5NH3 purple 2 [Co(NH3)5Cl]Cl2 \nCoCl3.4NH3 green 1 [Co(NH3)4Cl2]Cl \nCoCl3.4NH3 violet 1 [Co(NH3)4Cl2]Cl \nThe green and violet compounds must have some further difference. \nAll have 6 ligands (coordination number = 6)
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1. CCl4 carbon tetrachloride is a colorless liquid.\n2. Zn is the most chemically similar to Cd, because the two elements belong to the same family or column of the periodic table of elements.\n3. Only B and C a representation of Bronsted-Lowry's Acid-Base Theory.  A and E (HCl(g) + NH3(g) --> NH4Cl and Cu2+ (aq) +4NH3(aq) ---> [Cu(NH3)4]2+(aq)) represent a Lewis Acid-Base reaction. D (Al2O3 +2NaOH(aq) + 3H2O(l) --->2NaAl(OH)4 (aq)) is a combination or synthesis reaction.