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It is not to do with buffers.
If you take pure water at 25°C, it dissociates:
H2O ↔ H+ + OH- ( I use H- instead of H3O+ for simplicity)
You ask about bases:
If you add a base, such as NaOH to the water, you introduce a high concentration of OH- ions to the water.
This causes the dissociation equilibrium of the H2O to move to the left. ( In accordance with Le Chettellier) But the re-association of the H+ and OH - from the water is not complete - there are always some H+ ions dissociated
This is determined by the equation:
[H+] [OH-] = 10^-14
You can see this from the pure water where [H+] and [OH-] are both 1*10^-7M - the equation is satisfied
Now on adding the base, the [OH-] increases to 5*10^-3M , What is [H+] in this solution:
[H+] = 10^-14 / (5*10^-3) = 2*10^-12M
There will be a reducing concentration of H+ as [OH-] increases, but always some H+ present
The converse happens with an acid solution
You add acid, say HCl to the water so that [H+] = 5.10^-3
[OH-] = (10^-14)/ (5*10^-3) = 2*10^-2M
Even in the acid solution there will be some OH- ions present.
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The type of solution that conducts electricity is called an electroylte. This is because ions are formed where there are positive and negative charges in the solution. Electricity can travel through the solution because of these ions. A non-electroylte solution does not contain ions and therefore has no way to trasmit electricity.
What happens when silver nitrate solution is stored in zinc vessel?
Some of the silver ions from the silver nitrate solution are deposited as metallic silver on the contacted parts of the zinc vessel and are replaced by half as many zinc ions in the solution.
Is saltwater a basic solution And if not what are some examples of basic solutions?
baking soda, ammonia, and saltwater are three examples of basic solution's, although we are slowly making the sea acidic =[
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Substance that is of one color in an acid solution and of another color in a basic solution is a what?
An acid-base indicator. Some examples are phenolphthalein and methyl orange.
Does a base contain hydroxide ion or produce it in a solution?
Some bases, such as sodium and potassium hydroxides, contain hydroxide ions even in solid form. Others, such as ammonia, produce hydroxide in solution but do not contain any such ions when in pure form.
What are some of the physical characteristics of a basic solution?
A basic solution has basic solution has a higher concentration of hydroxide ions than hydrogen ions. Three properties of basic solutions are: a pH level between 7 and 14, slimy or soapy and caustic.
Do Polyatomic ions always contain oxygen?
In most of the cases it is true but SCN- , Transition metals complex ions and some organic poly atomic ions do not contain oxygen.
Why may solutions that contain an ionic solute conduct electricity?
The conductivity of an aqueous solution depends on the presence of free ions. Some solutes do not ionize in water (e.g. sugar) and so do not make a conductive solution. Others partially ionize (e.g. acetic acid) and so make a poorly conductive solution. Still others completely ionize (e.g. table salt) and so make a very conductive solution.
How do you make a neutral solution?
What determines if a solution is neutral is the ions present in solution. Something can be acidic, basic, or neutral. A typical acidic solution has H+ present in solution. An example of this is hydrochloric acid (HCl), which is a very strong acid. A typical basic solution has hydroxide ions (OH-) in solution. An example of this is NaOH. A neutral solution has ions that exhibit no acid/base properties. One of these is sodium chloride (NaCl). Group 1 ions do not exhibit any acid base properties, such as Na+. The conjugate bases of strong acids and the conjugate acids of strong bases also do not exhibit acid and base qualities. Cl- is the conjugate base of the strong acid HCl. There for a solution of NaCl is neutral or a pH of 7. So what determines if a solution is neutral are the ions present in solution. Group 1 ions are always neutral. Some other ions that are always neutral are Cl-, I-, Br-, and SO42- . These are all conjugate bases of strong acids.
Will na2o react with water to form a acidic solution?
No, it will form a basic solution of Sodium Hydroxide as per the following equation. Na2O + H2O ---> 2NaOH As the solution will have OH- ions so it will be basic. Na2O is a basic oxide and basic oxide dissolve in water to form bases( here NaOH). Acidic oxides dissolves in water to form acids. Alkali metal(group 1 of periodic table) oxides are always basic oxides, but all metal oxides may not be basic( some transition metal oxides are acidic).
Why do some solutions conduct electricity while others do not?
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Do liquid conduct electricity?
It depends on which liquid it is. Some do and some don't.
What can be in solutions of acid?
The chemcal solutions divide into 2 types acidic and basic the acidic solution is the solution whose PH(concentration of H+ ions) is below seven thw smaller the PH number the more acidic the solution is some acidic solutions can be:orange juice,hydrochloric acid.
What happens when silver nitrate solution is stored in zinc vessel?
Some of the silver ions from the silver nitrate solution are deposited as metallic silver on the contacted parts of the zinc vessel and are replaced by half as many zinc ions in the solution.
Is lye basic or acidic?
It's both really. Some ions are acidic, some are basic. Mostly, lye is in an acidic form though.
How do buffers reduce changes in pH when hydrogen ions or hydroxide ions are added to a solution?
Buffer solutions act as neutralizing agents that contain both positive and negative ions of a weak acid. Thus, if a base such as NaOH is added to the solution, the positive H+ ions will react with the negative (OH-) ions to neutralize the solution. Similarly, if an acid is added to the buffer, the negative ions (such as OH- or C2H3O2-) will react with the hydronium ions to neutralize the solution.
