Acids 1

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'.

Resumen del Recurso

	Creado por I Shouldn't be awake hace más de 6 años