![]() |
Creado por I Shouldn't be awake
hace más de 6 años
|
|
Pregunta | Respuesta |
Strong acid | Completely dissociates Gives up all its H atoms as H+ HCl -> H+ + Cl- The chlorine keeps the electron |
Why is H+ a proton? | As the hydrogen atom has lost its electron and so effectively consists of just a single proton |
Weak acid | Only gives up a proportion of its H atoms as H+ |
Why is ethanoic acid weak? | As it only gives up the hydrogen from its COOH group, proffering just a meager proportion of its hydrogens |
Why is the hydroxide ion negative? | As the H atom absconds, it leaves behind its electron to the mother O-H complex |
What is a base | Bases neutralise acids to form a salt Mop up loose charged atoms |
Alkali | soluble base that dissolves in water to release a hydroxide ion. |
What replaces the H+ ion? | Metal or NH4+ ions from the base. |
Sulfuric acid | Only one of its H+ ions is a strong acid SO4- readily reassociates with protons to form HSO4- and so is weak. |
What is the typical burette measurement read to? | +/- 0.05cm3 So reading ALWAYS has 2 decimal places |
What is the criteria for concordant results? | Agreeing to within 0.10cm3 of each other |
how do you work out mean titre? | add + divide by 'n'. |
¿Quieres crear tus propias Fichas gratiscon GoConqr? Más información.