Explanation:

A solid electrolyte is a link that will certainly conduct power while in solution. This is due to the fact that it creates countless charged ion in the solution. Because we want a weak electrolyte, the answer will certainly be the compound that does not kind many ions once in solution. NH3 is a weak basic which does not dissociate completely. Together a result, it creates few ions in solution, making the a weak electrolyte.

You are watching: An aqueous solution of barium fluoride is acidic

The other answer selections represent either ionic link or strong acids, and will dissociate fully in solution.


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Example inquiry #12 : Solubility and also Ions


Which that the adhering to compounds makes the least effective electrolyte? 


Possible Answers:

Silver chloride


Magnesium bromide


Sodium chloride


Ammonium carbonate


Correct answer:

Silver chloride


Explanation:

An electrolyte is a substance that creates ions once in solution. This compounds conduct electricity an extremely well through donating ions to one aqueous solution. The worst electrolyte will be the compound the creates the the smallest amount of ion in solution. Silver- chloride is relatively insoluble in solution, an interpretation that it will certainly make the the smallest amount of ion out the the offered options.

Van\"t Hoff element can additionally be beneficial in determining electrolyte effectiveness, yet is irregularity in this particular question.


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Example question #13 : Solubility and also Ions


Which of the adhering to is current in a solution of sodium cyanide?


Possible Answers:

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 molecules, but nearly no 
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or 
\"*\"
ions


\"*\"
 ions, 
\"*\"
ions, and 
\"*\"
molecules


\"*\"
ions and 
\"*\"
molecules, yet no 
\"*\"
ions


 and  ions, but virtually no  molecules


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 ions and 
\"*\"
molecules, but no
\"*\"
ions


Correct answer:

 and  ions, but nearly no  molecules


Explanation:

Salts are a type of solid electrolyte, together are solid acids and strong bases. Solid electrolytes rest up completely into ions (or \"ionize\") when dissolved in water. A systems of salt cyanide would contain virtually entirely sodium and also cyanide ions, and no salt molecules.

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Example question #14 : Solubility and Ions


Barium fluoride dissolves in systems according to the following equation.

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Enough BaF2 is added to create a saturated liter that aqueous solution.


Suppose that 0.5M of NaF is added to the solution. What will the solubility the BaF2 it is in in the new solution?


Possible Answers:

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\"*\"


\"*\"


Correct answer:


Explanation:

When 0.5M that NaF is added, it rises the amount of fluoride ions in the solution. Together a result, we deserve to expect the solubility of the salt to decrease (a an outcome of the common ion effect).

To recognize by exactly how much the solubility will decrease, we need to use the solubility product continuous expression v the newfound fluoride concentration. The expression because that the equation is

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. Remeber that pure solids and liquids (such together solid barium flouride are not consisted of in this expression).

Since over there is a starting concentration the 0.5M for the fluoride, the predicted rises in the ion concentrations for Ba2+ and F- are now X and also (0.5 + X) respectively. We deserve to plug these variables into out equation.

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Since the value of X will certainly be much smaller than 0.5, the is acceptable to simplify the fluoride part of the equation to simply (0.5)2.

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Example concern #15 : Solubility and also Ions


Barium fluoride disappear in systems according come the complying with equation.

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\"*\"


Assume one aqueous systems is saturated with BaF2. What is the solubility the BaF2?


Possible Answers:

\"*\"


It relies on the concentration of BaF2 in the solution.


Correct answer:

\"*\"


Explanation:

When the solution is saturated, we can determine the solubility of the salt in the solution. We have the right to determine the solubility by using the solubility product consistent and to compare it to the quantity of ions predicted to be produced in the dissolve of the salt. Because the dissolve of BaF2 will yield 1 Ba2+ ion and 2 F- ions, we deserve to express their increases as X and 2X respectively. Plugging this in to the equation because that the solubility product constant yields the calculations below.

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Example question #16 : Solubility and Ions


Scandium hydroxide,

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, has a 
\"*\"
value of
\"*\"
. What is that is solubility?


Possible Answers:
Correct answer:

\"*\"


Explanation:

Scandium hydroxide dissociates according to the following reaction.

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The 

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for this dissociation is created as follows. Keep in mind that the hard is left the end of the equation.

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If 

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is the lot of 
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that forms when 
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dissociates, then 
\"*\"
is the amount of 
\"*\"
formed, based upon stoichiometry.

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Solving this equation provides us the value of

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.

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This worth is the solubility of scandium hydroxide.


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Example concern #17 : Solubility and Ions


Which problem is much more soluble in hydrochloric acid 보다 sodium hydroxide?


Possible Answers:
Correct answer:

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Explanation:

Though we room asking around solubility in a solid acid and in a solid base, this is not one acid-base chemistry question.

Instead, us are taking care of solubility, which is directly affected by the solubility product constant. The solubility product consistent for every answer an option is provided below.

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Hydrochloric mountain will add to hydrogen and chloride ion concentrations, while salt hydroxide will contribute to sodium and also hydroxide ion concentrations. The solubility product consistent for hydroiodic mountain incorporates the hydrogen ions, while the product continuous for lead (II) hydroxide incorporates the hydroxide ions.

Increasing the ion concentration outcomes in the typical ion effect. Link are much less soluble in solutions already containing ion that add to their solubility product constant. We have the right to thus conclude that lead (II) hydroxide will certainly be less soluble in salt hydroxide since the salt hydroxide contributes a typical ion.


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Example concern #18 : Solubility and Ions


Electronegativity is critical concept in physics chemistry, and often provided to assist quantify the dipole moment of polar compounds. Polar compound are various from those link that are purely nonpolar or completely ionic. An example can be checked out by contrasting sodium chloride, NaCl, v an organic molecule, R-C-OH. The previous is purely ionic, and also the last is polar covalent.

When comparing more than one polar covalent molecule, we usage the dipole minute value to assist us identify relative strength of polarity. Dipole moment, however, is dependent on the electronegativity the the atoms comprising the bond. Electronegativity is a property natural to the atom in question, whereas dipole minute is a home of the bond in between them.

For example, oxygen has actually an electronegativity that 3.44, and hydrogen that 2.20. In other words, oxygen much more strongly attracts electrons when in a bond with hydrogen. This leads to the O-H bond having a dipole moment.

See more: (Also Called Prepaid Accounts (Also Called Prepaid Expenses) Are Generally:

When every the dipole moment of polar bonds in a molecule room summed, the molecule dipole minute results, as per the following equation.

Dipole minute = fee * separation distance


Given the polarity that O-H bonds in water defined in the passage, what is the Ksp expression for the following reaction, assuming that takes location in one aqueous environment?