What determines a strong acid?

Question

I used to know, but I forgot over the summer. :p

help?

Answer 1

Mr. Hatzillias,

When I assign you summer homework, I expect YOU to do it, not the people of yahoo answers.  You need to buckle down and do your own schoolwork.

Answer 2

Strong acid dissociates easily in water.  HCl, hydrochloric acid, is a strong acid because 100% of it dissociates into H and Cl in solution.

HF is a weak acid (hydrofloric acid) because only a small percent dissociates in water.  (You have H and F and a lot more of HF that has not separated)

Answer 3

Firstly.

An ACID is a PROTON DONOR

(Where a PROTON is a HYDROGEN CATION)

A STRONG ACID is an acid that FULLY DISSOCIATES INTO PROTONS AND ANIONS

e.g.

- HCl ---> H+ + Cl-

HCl is a STRONG ACID because all of it's Hydrogens become PROTONS

- CH3COOH ---> H+ + CH3COO-

Ethanoic acid (CH3COOH) is a WEAK ACID because only one of it's FOUR hydrogens becomes a proton (:

Good luck, fellow chemist (:

x

Answer 4

A strong acid is one where the proton is easily donated.  

Now ONE thing you can do is: remember the periodic table and which atoms are the MOST electronegative.  The most electronegative atoms are F and Cl and Br therefore HF and HCl and HBr are strong acids.  There are more but that it just one example.

Answer 5

A strong acid is  completely dissociated in water such as

HCl--> H+ +Cl-

A weak acid is partially dissociated

Answer 6

It can b determined by a pH paper. Actually, a strong acid is one which is completely ionised in an aqueous solution and furnishes H+ ions in it. Hope u don't forget it over the winter now, Try atleast to remember this,OK?

Answer 7

the amount of H+ ions furnished by ht eacid in their aqueous sol^n

Answer 8

Its pH. Some people might confuse a strong acid with a highly concentrated acid which are two different things. A strong acid is one that almost totally dissociates in water.