C5.8 - Strong And Weak Acids Flashcards
A concentrated solution of a solute contains ___
A concentrated solution of a solute contains a greater amount of that solute in the same volume of solution than a more dilute solution
What must acids do before showing any of their properties?
Acids must dissolve in water for any of their properties to appear
What happens when acids dissolve in water?
Acids ionise in water, they split up to produce hydrogen ions H+ and negative ions
What will HCl change to when it ionises?
H+ and Cl- ions
Why do the negative ions produced when acids ionise not balance out the H+ ions?
As they are not Oh-? Good question
What is the difference between strong and weak acids?
Strong acids ionise completely in water, but weak ones do not fully ionise in a solution. All acid particles release H+ vs only a small proportion released
What is special about the ionisation of weak acids?
Te ionisation of weak acids is a reversible reaction. An equilibrium is reached as molecules of weak acid split up and recombine
Where is the position of equilibrium in the ionisation of weak acid reversible reaction and why?
Well to the left as only a few of the particles release H+ ions
How are pH and Concentration of acid (h+ ions) related?
As the concentration of H+ ions increases by a factor of 10 the pH decreases by one unit
