Flashcards in 1.Acids, bases and salts. Deck (16):
What is a salt?
salts are ionic compounds formed when the H+ ions in acids are replaced by metal IONS or ammonia ions.
What is a base
a proton acceptor
What is an acid
a proton donor (releases H= ions in aqueous solution)
what is a alkali
Releases OH- ions when in a water solution
whys are things classified as a base but not as an alkali?
IF it accepts protons but dosnt dissolve it cant be and alkali because an alkali need to be able to release OH- ions into a solution which cant happen if its insoluble.
Acid + metal oxide ---->
Salt + water
Acid + metal (reactive) ---->
salt + hydrogen gas
Acid + metal carbonate---->
salt + CO2 + water
Acid + metal hydro carbonate ---->
salt + water + CO2
Acid + alkali ---->
salt + water
3 types of bases
Metal hydroxides - HO- ion reacts with H+ to from water
Ammonia (and organic amino componds)
dilute amodia decolourises which halid ions?
conc ammonia decoulourises which halide ions?
Bromide, and Chloride
insoluble compoud + acid is slow becuase ....
only the surface of the compound can react at once.
methyl orange colours
neural(bit more acidic 4ph) -orange
acidic - red