Consider the following reaction: HCl + H_2 O rightarrow Cl^- + H_2 O^+ a. Recall

Question

Consider the following reaction: HCl + H_2 O rightarrow Cl^- + H_2 O^+ a. Recalling that strong acids dissociate completely in water, draw a large 'x' through the species in the above reaction that will not be present in any significant amount. b. Why is a forward arrow (rightarrow) used in this reaction instead of an equilibrium arrow (doubleheadarrow)? c. Work with your team to explain the following true statement: There is no species in the above reaction that can neutralize added hydronium ion. Which would make a better buffer system: a strong acid and its conjugate base or a weak acid and its conjugate base? Explain.

Explanation / Answer

13.a.The HCl is the species in the above reaction that will not be present in any significant amount as HCl is a strong acid and it will undergo complete dissociation in water to form chloride ion and hydronium ion.

. b. The forward arrow indicates that the reaction goes to completion. This is because HCl is a strong acid and it will undergo complete dissociation in water.

C. To neutralize any added hydronium ion, there must be hydroxide ion in solution but there is no free hydroxide available for that.

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