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Acids 1

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Flashcards on Acids 1, created by I Shouldn't be awake on 15/04/2018.
I Shouldn't be awake
Flashcards by I Shouldn't be awake, updated more than 1 year ago
I Shouldn't be awake
Created by I Shouldn't be awake almost 7 years ago
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Question Answer
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'.
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