According to Bronsted-Lowry reaction- an acid is any substance that donates a proton (H+ ion) to another substance hence these two substance are acid aspirin (acetylsalicyclic acid) and hydrochloric acid (HCl). And there are two pairs - an acid with a corresponding conjugate base and a base with a corresponding conjugate acid. These pairs are called conjugate acid-base pairs.
The answer is c hope it helps
We're given the [OH⁻] as 8.34 × 10⁻¹² M. Using the formula pOH = -log[OH⁻], the pOH of this solution would be -log(8.34 × 10⁻¹²) ≈ 11.08.
The pOH is, for lack of a better term, the "opposite" of pH: A pOH of 7 is neutral; a pOH less than 7 is <em>basic</em>; and a pOH greater than 7 is <em>acidic</em>.
This follows from the relation, pH + pOH = 14. In this case, with a pOH of 11.08, our pH would be 14 - 11.08 = 2.92, which is acidic (pH < 7).
Thus, the correct answer choice is B.
The answer is 7.
The equivalence point of a titration is when moles of titrant added becomes equal to the moles of sample analyte.
Calculate the pH at equivalence point for a strong acid and strong base reaction.
- The given acid is HCl which is a strong acid and the base NaOH is also a strong base.
- Calculate the moles of acid HCl:
Molarity of = 0.100 M
Volume of = 50 mL = 0.050 L
×
×
- At equivalence point, same moles of base are added and thus it results into complete neutralization. Thus, all the hydrogen ions of acid are neutralized by the hydroxide ions of the base forming only water and neutral salt.
- Thus, the pH at the equivalence point becomes 7 (neutral solution).
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