Recognising strong, concentrated and dilute acids and bases.

[wildareal]

Consider the following solutions:
i) 6M hydrochloric acid
ii) 0.1M carbonic acid
iii) 0.1M nitric acid
iv) 6M ethanoic acid

Identify which solution represents:
a) a dilute strong acid
b) a concentrated strong acid
c) a dilute weak acid
d) a concentration weak acid

Thanks.

[matt123]

Consider the following solutions:
i) 6M hydrochloric acid
ii) 0.1M carbonic acid
iii) 0.1M nitric acid
iv) 6M ethanoic acid

Identify which solution represents:
a) a dilute strong acid
b) a concentrated strong acid
c) a dilute weak acid
d) a concentration weak acid

Thanks.

concentrated strong = the 6M hcl
concentrated weak acid = 6M ethanoic acid
0.1 nitric = dilute strong
0.1 carbonic = dilute weak

[wildareal]

Ah I see. Thanks. Is it just common knowledge that ethanoic is weak and hydrochloric is strong?

[matt123]

Ah I see. Thanks. Is it just common knowledge that ethanoic is weak and hydrochloric is strong?

umm .. Well ... pretty much .. im guessing your in year 11 chem.
lol and ur not at school?? ( im not either because of geelong cup )

also ... there is a list of weak acids in the yr 12 data booklet

[Russ]

Ah I see. Thanks. Is it just common knowledge that ethanoic is weak and hydrochloric is strong?

Yeah. You can work it out by considering what atoms it's bound to and the overall molecule, but just remember the common ones because that's all they'll really use

[masonnnn]

and usually any weak acids that vcaa use are in the data booklet if you're not sure.

[Mao]

In VCE, only Sulfuric acid (H2SO4), Hydrochloric acid (HCl) and Nitric acid (HNO3) are considered as strong acids.

[|ll|lll|]

Ah I see. Thanks. Is it just common knowledge that ethanoic is weak and hydrochloric is strong?

Ethanoic acid is weak because it doesn't dissociate fully in water.
I.e. CH3COOH <--> CH3COO- + H+

HCL is a strong acid because it fully dissociates in water.
i.e. HCl --> H+ + Cl-

Therefore, in any one situation, with the same volume and conc. of both acids, you would have more H+ ions in the solution of HCl because there is full dissociation.

I can't remember if phosphorus acid H3PO4 was a strong acid or not... xP