Question

Grade 11 Bronsted Lowry help please!

Answer 1

I don't really get bronsted lowry theory =/
So technically all acids, even arhenius ones, are considered bronsted lowry theory, right?

These are my main questions.

1. Arhenius acids & bases react to produce a salt and water, right? What about the neuturalization of a Bronsted Lowry theory, what do they produce?

2. So is the Arhenius acid and base, such as HCl and NaOH react, the equation would be
HCL + NaOH => H2O + NaCl

But theyre also bronsted right? And according to bronsted, the acid donates a proton and base accepts it right? So wouldnt the reaction be

HCL + NaOH => Cl + NaOHH or something?????? Ugh :( Can you please explain to me how to write

HCl + NaoH in bronsted lowry style?



THANK YOU SO MUCH!

Answer 2

Well, I don't really understand you but..

The Bronsted-Lowry theory of acids and bases expatiated Arrhenius theory to explain the behaviour of a wider range of substances, with not only waterr as the solvent. Since the Arrhenius definition of acids and bases was limited. It only applied to aqueous (water solutions) and did not explain how some substances can as both an acid and a base.

The Arrhenius theory stated that acids produced \(H^+ ~ions\) when in water.
He proposed the idea that acids break into their ions when they are dissolved in water. Therefore, he hypothesised that acids release a \(H^+\) when in aqeuous solutions. It only applied to aqeuous solutions.

The Bronsted Lowry theory stated that an acid is a proton (\(H^+\)) donor and a base is a proton \(H^+\) acceptor. This is different from Arrenhius theory since it extended acid/base reactions to those without water.

Hope this helps..

Answer 3

NaOH is not strictly speaking a Brønsted base because NaOH2+ does not exist.
But, NaOH dissolves into Na+ and OH-

OH- is a Brønsted base, since it can gain a proton to form H2O.

Neutralisation of Brønsted acid and Brønsted base leads to a weaker Brønsted acid and a weaker Brønsted base.

But in the case the acid is H+ (or H3O+) from a strong acid solution or, base is OH- from a strong base solution, then Acid + base -> salt + water still holds.

eg: NH3 + HF -> NH4+ + F- does not form water

NH3 + H3O+ -> NH4+ + H2O and
HF + OH- -> F- + H2O form water.

Answer 4

Thanks so much both of you!

Vincent-Lyon.Fr I think I get it now!:) So Bronsted Lowry neutralization could produce salt and water, but not always?