1 Answers
Call
Talk Doctor Online in Bissoy App
Why do solutions of a strong acid, and a strong base, which contain equimolar $H_3O^+$ and $HO^-$, when mixed give rise to a solution that is $pH$ NEUTRAL?
When common hydroxide salts (i.e. those of sodium or potassium) are added 1:1 to a strong acid, $HX$, a neutralization reaction occurs to give $NaX$, or $KX$. i.e. $HX...
1 Answers 1 views
Can you identify the following as weak acid, strong acid, weak base, strong base, or neutral? How do you determine this?
Simply from the $K_a$, or the $"pKa"$. Or, the $K_b$, or the $"pKb"$, if comparing by dissociation in water. The higher the $K_a$ or lower the $"pKa"$, the stronger...
1 Answers 1 views
Is $HCl$ a strong acid or strong base? How is the determined?
Acidity (and we usually specify an aqueous solvent) is assessed on the basis of the completeness of the following equilibrium: $HCl(g) + H_2O(l) rightleftharpoons H_3O^(+) + Cl^-$ Hydrogen chloride is...
1 Answers 1 views
What is a strong acid? Strong base?
.....and propose that a strong acid is a species for which the following equilibrium lies to the RIGHT as written: $HX(aq) +H_2O(l) rarr H_3O^(+) + X^-$ And further that a...
1 Answers 1 views
Why does a strong acid have a weak conjugate base, whereas a weak acid has a relatively strong conjugate base?
Since strong acids completely dissociate in water, their conjugate bases cannot bond to a $H^+$. This is why there is not an equilibrium when strong acids are in water....
1 Answers 1 views
What considerations apply when a weak acid is titrated with a strong base, as opposed to a strong acid with a strong base?
If, say, we have equimolar, say $1.0*mol*L^-1$ $HX_"i"$ and $HX_"ii"$, where $HX_"ii"$ is a weak acid, then clearly, for equivalence, we need to add equimolar quantities of strong base. There...
1 Answers 1 views
If $53$ $mL$ of a base solution having an $OH^-$ ion concentration of $2.35 * 10^-3$ $M$ is titrated with $57$ $mL$ of an acid (assume a strong monoprotic acid) what is the concentration of the acid (concentration of the hydronium ion)?
A will take place when the hydronium cations produced by the acid in solution will react with the hydroxide anions produced by the base to form water. $"OH"_text((aq])^(-)...
1 Answers 1 views
Does it matter if you spray a bit of water at the tip of your burette when titrating strong base into strong acid, i.e. does it change the equivalence point?
It decreases the concentration of your acid solution, so you may need to swirl your solution more every now and then to ensure that the titrant is distributed throughout the...
1 Answers 1 views
How many millimoles of strong acid or strong base can be added to the solution before any significant change in pH occurs?
The thing to remember about buffers is that they resist significant changes in because they convert strong acids or strong bases to weak acid or weak bases, respectively. In...
1 Answers 1 views
The temperature of a $"15-mL"$ strong acid solution increases by $2^@"C"$ when $"15 mL"$ of a strong base is added. By how much should the temperature increase if $"5 mL"$ of each are mixed?
QUICK ANSWER The temperature of the solution will increase by $2^@"C"$ regardless of how much strong acid and strong base you're mixing because the change of , $DeltaH_"neut"$, is...
1 Answers 1 views