Acids and redox Flashcards
What must redox reactions balance in?
Electrons transferred (changes in oxidation numbers )
What is a proton acceptor?
A substance that accepts H+ ions
What is a proton donor?
A substance that donates/ releases H+ ions
What’s the difference between alkalis and bases?
Alkali is a base (accepts H+) that dissolves in water to release OH-
Name types of bases
Metal oxides
Metal carbonates
Metal hydroxides
Alkalis
Describe neutralisation
When H in acid is replaced by metal or ammonium ion
Acid + base= salt + water
Acid + carbonate=?
Salt + water + carbon dioxide
Acid + metal oxide=?
Salt + water
Name and give formula of common acids
Sulphuric acid (H2SO4)
Nitric acid (HNO3)
Ethanoic acid (CH3COOH)
Hydrochloric acid (HCl)
Name and give formula for common bases
Metal oxide (MgO)
Metal hydroxide (Ca(OH)2)
Metal carbonate (CaCO3)
Alkali (KOH)
What ways can you calculate water of crystallisation?
By subtracting M of anhydrous salt from M of hydrated compound and dividing it by 18 (M of H2O)
Finding ratio of moles
What is the water of crystallisation?
The water that is bonded within the crystalline structure of a hydrated compound
Define concordant results
Results within o.1 dm3
Define titre
Minimum volume of solution needed to reach end point in a titration
What is a standard solution ?
A solution of known concentration