acids bases and salts Flashcards
what are acids?
proton donors,
ph<7
what are bases?
proton acceptor
substance that neutralises an acid
ph>7
do alkalis dissolve in water?
yes
sulfuric acid symbol
H2SO4
sulfate salt symbol and charge
SO4 2-
hydrochloric acid symbol
HCL
chloride symbol and charge
CL -
nitric acid symbol
HNO3
nitrate symbol and charge
NO3 -
what solutions contain H+ ions
aqueos solutions of acids
what do aqueous solutions of alkalis contain
OH- ions
what happens when an acid reacts with a metal
salt and hydrogen are given off
what happens when a metal oxide reacts with bases
salt and water are formed
what happens when an acid reacts with a metal hydroxide
salt and water formed
what happens wen an acid reacts with a metal carbonate
salt, water, and carbon dioxide formed
what happens when an acid reacts with ammonia
ammonium slat formed
what color does litmus paper turn with an acid and then with an alkali
acid= red
alkali=blue
thymolphthalein color when with acid and then with alkali
acid= colourless
alkali=blue
methyl orange turn with acid and with alkali
acid=red
alkali-yellow
phenolphthalein color with acid and alkali
acid= colourless
alkali=pink
universal indicator turns what colour with alkali and acid
alkaline= blue (weak) purple (strong)
acid= orange(weak) red (strong)
what is a strong acid
acid that completly dissociates in aqueous solution