Post a New Question

Chemistry

posted by .

For each substance, write the formula(s) of all species you expect to be present in aqueous solution in the first column. If there are significant minor species, write their formulas in the last column. If the substance is only slightly soluble, use the molecular formula or formula unit followed by (s) for the major species.

I don't understand how you would know which is a major or minor species and what I am asked to do. Thanks in advance for the homework help!

Here is what think for the following:

HCl
I know it is soluble because it is a strong acid, so it would be H+ and Cl^-.

C6H12O6
I'm not sure about this one.

AgCl
I know it is insoluble because that is Ag+ is one of three halides exceptions, so it would remain AgCl(s)?

HNO2
I think this is a weak acid, so it would remain HNO2(s)?

CuI2
I know it is soluble because it is now one of the three halides exceptions, so it would be Cu^2+ and 2I^-.

  • Chemistry -

    I think you have understood fairly well. My comments follow each of your responses.
    HCl
    I know it is soluble because it is a strong acid, so it would be H+ and Cl^-.
    Correct, and since this is a strong acid; i.e., 100% ionized, then there is no HCl hanging around, with H^+ and Cl^- being major species.

    C6H12O6
    I'm not sure about this one.

    More than likely, this is glucose or fructose, an organic molecule, but completely soluble in water. So it would be the major species in solution which you would write as C6H12O6(aq).

    AgCl
    I know it is insoluble because that is Ag+ is one of three halides exceptions, so it would remain AgCl(s)?
    correct

    HNO2
    I think this is a weak acid, so it would remain HNO2(s)?
    It is not a solid. It is a weak acid; therefore, there would be minor (small) amounts of H^+ and NO2^- with major amounts of HNO2(aq) left unionized. Since it is a weak acid, that means it isn't 100% ionized.

    CuI2
    I know it is soluble because it is now one of the three halides exceptions, so it would be Cu^2+ and 2I^-.
    correct

  • Chemistry -

    Thanks DrBob222! so, really, the only minor species are H+ and NO2^- for HNO2. That means only weak acids have minor species? AgCl(s) is the only solid solution, and everything else is aqueous (aq). Salts are the only type of solution that can be solids?

  • Chemistry -

    I wouldn't call AgCl a solid solution. It is a salt that is not soluble in water except to a very limited extent (The solubility product is Ksp = about 10^-10).
    Salts may be soluble or not depending upon the solubility rules and you seem to have those rules down rather well. And it is true that most INORGANIC compounds that are not soluble ARE salts, BUT there are many compounds that are not soluble in water that are not salts. For example, wood, leaves, (although both wood and leaves are mixtures of many compounds), many organic solids, etc.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    Reaction 1: I2(aq)Cu^+2(aq) Ag^+(aq)Br2(aq) Column 1---Column 2---Column 3---Column 4---Column 5 I-(aq)---X---X---T---T Cu(s)---T---X---T---T Ag(s)---X---X---X---T Br-(aq)---X---X---X---X Reaction of metals and solution of ions Reaction …
  2. CHEMISTRY!!

    Hi I need help doing this question! Thank you in advance! Suppose that a mixture contains 1,4-dimethoxybenzene and benzoic acid. An experiment is performed in which this mixture is dissolved in diethey ether, the solution is mixed …
  3. chemistry

    Enter the formula and state of the major species that result when a few grams (about 0.01 mol) of each substance is added to 100 mL of water. When appropriate use water to form species such as the hydronium ion. Separate multiple species …
  4. chemistry

    Enter the formula and state of the major species that result when a few grams (about 0.01 mol) of each substance is added to 100 mL of water. When appropriate use water to form species such as the hydronium ion. Separate multiple species …
  5. chemistry

    Enter the formula and state of the major species that result when a few grams (about 0.01 mol) of each substance is added to 100 mL of water. When appropriate use water to form species such as the hydronium ion. Separate multiple species …
  6. Chemistry

    1. Write the formulas of the principal molecular or ionic species present in an aqueous solution of each substance. (a) Sodium Chloride, NaCl Na+ + Cl- (b) Hydrogen bromide, HBr (c) Iron (III) sulfate, Fe2(SO4)3 (d) Ethanol, CH3CH2OH …
  7. Chemistry 110

    Write the formulas of the principal molecular or ionic species present in an aqueous solution of each substance. (a) Sodium Chloride, NaCl (b) Hydrogen bromide, HBr (c) Iron (III) sulfate, Fe2(SO4)3 (d) Ethanol, CH3CH2OH (e) Glucose, …
  8. gc chemistry - retention time

    adjusted retention time is the time a species spends in the stationary phase. its the total time it takes the species to elute minus the time it takes for an unretained species to elute. corrected retention data accounts for the change …
  9. Science

    A biologist made population counts of four different species of animals in an ecosystem. What can you infer from these numbers about possible predator-prey relationships between the species?
  10. science (check!)

    A biologist made population counts of four different species of animals in an ecosystem. What can you infer from these numbers about possible predator-prey relationships between the species?

More Similar Questions

Post a New Question