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An acidic buffer can be prepared by making a solution of
- a)formic acid and sodium formate
- b)HCI and NaCI
- c)NaOH and NaCI
- d)NH4CI and NH4OH
Correct answer is option 'A'. Can you explain this answer?
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An acidic buffer can be prepared by making a solution ofa)formic acid ...
An acidic buffer can be prepared by making a solution of an acid and its salt solution. So, an acidic buffer can be prepared by making a solution of formic acid and sodium formate.
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An acidic buffer can be prepared by making a solution ofa)formic acid ...
Forming an Acidic Buffer Solution
To prepare an acidic buffer solution, a weak acid and its conjugate base are required. This allows the solution to resist changes in pH when small amounts of acid or base are added. In this case, the correct option is:
a) Formic acid and sodium formate
Formic Acid (HCOOH)
Formic acid is a weak acid that can act as the acidic component of the buffer solution. It only partially dissociates in water, releasing H+ ions.
Sodium Formate (HCOONa)
Sodium formate is the salt formed by the reaction of formic acid and sodium hydroxide. It acts as the conjugate base in the buffer solution, capable of reacting with added H+ ions.
Mixing Formic Acid and Sodium Formate
When formic acid and sodium formate are mixed in solution, the formate ions from sodium formate can react with any added H+ ions from an external acid source, maintaining the pH of the solution.
Buffer Capacity
The effectiveness of the buffer solution in resisting pH changes depends on the concentrations of the weak acid and its conjugate base. A higher concentration of both components leads to a greater buffer capacity.
In conclusion, by preparing a solution of formic acid and sodium formate, an acidic buffer solution can be created that helps maintain a stable pH when small amounts of acid or base are introduced.
To prepare an acidic buffer solution, a weak acid and its conjugate base are required. This allows the solution to resist changes in pH when small amounts of acid or base are added. In this case, the correct option is:
a) Formic acid and sodium formate
Formic Acid (HCOOH)
Formic acid is a weak acid that can act as the acidic component of the buffer solution. It only partially dissociates in water, releasing H+ ions.
Sodium Formate (HCOONa)
Sodium formate is the salt formed by the reaction of formic acid and sodium hydroxide. It acts as the conjugate base in the buffer solution, capable of reacting with added H+ ions.
Mixing Formic Acid and Sodium Formate
When formic acid and sodium formate are mixed in solution, the formate ions from sodium formate can react with any added H+ ions from an external acid source, maintaining the pH of the solution.
Buffer Capacity
The effectiveness of the buffer solution in resisting pH changes depends on the concentrations of the weak acid and its conjugate base. A higher concentration of both components leads to a greater buffer capacity.
In conclusion, by preparing a solution of formic acid and sodium formate, an acidic buffer solution can be created that helps maintain a stable pH when small amounts of acid or base are introduced.
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An acidic buffer can be prepared by making a solution ofa)formic acid and sodium formateb)HCI and NaCIc)NaOH and NaCId)NH4CI and NH4OHCorrect answer is option 'A'. Can you explain this answer?
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