Recent content by eli64

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    How Do You Calculate the Redox Potential for This Reaction?

    Are these J's typos, meaning I instead? So you used the Nerst equation to calculate the half cell potentials? The Nerst equation is used to find the overall redox potential for the overall redox reaction, not half cell potential as implied here. The standard half cell potentials for...
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    Equilibrium problem involving cube root

    It is a curious approximation. I'm not sure how to explain it. Another approach: If K is so large, how does adding the Ni(s) reactant shift the equilibrium, and what does that indicate about [Fe3+] and its initial concentration? There is an approximation that could be made but I would...
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    Equilibrium problem involving cube root

    May I suggest double-checking the equilibrium constant value. GCT's suggestion will apply if the K is very small. However as written, K is very large and may affect what is negligible.
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    ClO3+: Hybrid Orbital of Chlorine Atom

    MarkL, given your short exposure to these topics, your proposed structure is perfectly understandable. However there are complex ideas with this ion. Compare the formal charges for the book's structure vs your proposed structure. Then yes, Lewis structure = formal charge. IMHO this is...
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    VSEPR Model for AsH3 and OF2: Understanding Molecular Geometry

    yes electrons are in the tetrahedral arrangement and dictate the arrangement of the outside atoms. so what shape has 4 pairs of electrons, 1 unshared and 3 outside atoms?
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    Quick question about equilibrium of a reaction

    likely the CoCl2 4- was prepared with an alcohol content in its solution to maintain this species and not revert to the water product. water is a reactant here.
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    Calculating equilibrium constant rules

    Did you just happen to work out the numbers and find the right answer or did you see that rearranging the Ka expressions for the acids gave Ka(CH3CO2)/Ka(HNO2) which was equal to the K expression for the original equilibrium?
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    Calculating equilibrium constant rules

    write the K expression for this equilibrium then compare it to the Ka expressions for both CH3CO2H AND HNO2
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    Quick question about equilibrium of a reaction

    any reactant or solvent in a chemical reaction has a concentration, even water. So what will the equilibrium do if more water is added?
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    VSEPR Model for AsH3 and OF2: Understanding Molecular Geometry

    shape depends on atoms
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    VSEPR Model for AsH3 and OF2: Understanding Molecular Geometry

    For AsH3 you are on the right track - keep thinking about the shape - but your solution manual is wrong For OF2 you are correct and the manual is wrong again
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    Quick question about equilibrium of a reaction

    this is an equilibrium, what happens when one side of the equilibrium is disturbed? what chemical principle is this related to?
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    Forming a Buffer Solution: Identifying the Best Pair of Solutions

    Yes this is Chem II. There are 2 version of the ACS exam. One is for first semester (chem I) and the gen chem exam is for chem I and II. Was your course I or II? We did a big long chapter on buffers in chem II.
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    Chemistry Problems: Can You Help Me Solve These Three?

    Not likely. F with a double bond and 2 LP would violate the octet rule as written above. There is no double bond in HOFO. Oxoacids as in HXO where X = Group 15, 16, 17 non-metal , X is the central atom. H is bonded to an O not the X Think of HClO4, HClO3, HClO2 (HFO2) and HClO The...
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    Acids, Bases, and Salts: Essential Equations and Laws for Success in Class

    look here http://www.biology.arizona.edu/biochemistry/problem_sets/ph/HH.html but if it is not in your textbook, then you may be doing it with an ICE table (longer and more work IMO) I= initial concentration C = change in concentration E = equilibrium concentration