The pH scale and neutralisation Flashcards
What is an acid?
In an aqueous solution an acid produces the H+ ion
What is an alkali?
In an aqueous solution an alkali produces OH- ions
What is an OH- ion called?
A hydroxide ion
On the pH scale, a reading of less than 7 means that the solution is [blank]?
fill in the blank
An acid
The stronger the acid the [blank] away it is from pH 7
fill in the blank
The stronger the acid, the further away it is from pH 7
On the pH scale, a reading of greater than 7 means that the solution is a [blank]
fill in the blank
An alkali
The stronger the alkali the [blank] away it is from pH 7
The stronger the alkali the further away it is from pH 7
The neutralisation reaction is an example of what?
An IONIC EQUATION
an ionic equation is an equation which only involves ions, and it only involves the things that changed charged when going from the reactants side to the products side
The neutralisation reaction equation is the same for all neutralisation reactions betweenan acid and an alkali
TRUE or FALSE
TRUE!
It’s always
H+(aq) +OH-(aq) → H2O(l)
In words explain the neutralisation reaction
In an aqueous solution an acid produces an H+ ion and an alkali produces an OH- ion
The ions react to produce water
On the pH scale what colour indicates a strong alkali?
Purple
On the pH scale what colour indicates a strong acid?
Red
Which three things does a neutralisation reaction happen between?
An acid + a:
Base
Alkali
Metal Carbonate
