identify a pH value between 2.5 and 7.5 at which the concentration of the weak acid being titrated is less than the concentratio
1 answer:
Answer:
Hello your question is incomplete attached below
A student titrated 50.0mL of a 0.10M solution of a certain weak acid with NaOH(aq). The results are given in the graph above.
answer : pH > 3.5
Explanation:
During the titration before the equivalence point the solution will behave as a buffer system of a weak acid and base ( conjugated )
when pH ~ pka the concentration of weak acid = base ( conjugated ) hence when the pH value crosses the pka value , the concentration of the pH value will drop lower than the value of the conjugated base
hence the pH value ≥ 3.5
You might be interested in
The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.
The moles of reactant and product in a chemical reaction to the whole number ratio is given by the stoichiometric coefficient of the balanced chemical equation.
<h3>Computation for the moles of oxygen</h3>The balanced chemical equation for the reaction is :
From the balanced chemical equation, the 2 moles of acetylene react with 5 moles of oxygen.
The moles of oxygen react with 1 mole of acetylene are:
The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.
Learn more about moles reacted, here: