Answer:
The correct answer is and
Explanation:
A "spectator ion" is an ion that exists as a reagent and as a product in a chemical reaction. This ion has the particularity of not affecting the equilibrium.
In this case, the two components that do not see their charges modified on both sides of the reaction are and
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The pH range of a buffer is the pH window where in the uffer resists the changes in pH of the solution upon addition of small amounts of acid or base. Generally, the pH range of a buffer solution is equal to pKa ±1.
for this system :
ka= 1.3*10⁻⁷ , hence
pKa= - log (Ka)
pKa = - log ( 1.3*10⁻⁷)
pKa = 6.88
Therefore, hence the buffer can be used in pH range of 5.88 to 7.88.
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Answer:
A salt is a neutral ionic compound. Let's see how a neutralization reaction produces both water and a salt, using as an example the reaction between solutions of hydrochloric acid and sodium hydroxide. The overall equation for this reaction is: <u>NaOH</u> + <u>HCI</u> → <u>H2O</u> <u>and</u> <u>NaCl</u><u>.</u>
Explanation:
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