click below
click below
Normal Size Small Size show me how
Acid - bases
5070/0620
Question | Answer |
---|---|
Acids are | proton donors |
What type of compounds are bases? | metal oxides and hydroxides |
bases produce ________ ions in aqueous solutions | hydroxide ions (OH-) |
acids produce ________ ions in aqueous solutions | hydrogen ions (H+) |
Strong acid | an acid that is completely dissociated in aqueous solution |
Weak acid | an acid that is partially dissociated in aqueous solution |
Bases are | proton acceptors |
Alkalis are | soluble bases |
acids have a pH value | less than 7 |
bases have a pH value | greater than 7 |
characteristic properties of acids are their reactions with | metals, bases and carbonates |
characteristic properties of bases are their reactions with | acids and ammonium salts |
acids upon reaction with metals produce ____________ gas | hydrogen |
acids upon reaction with carbonates produce ____________ gas | carbon dioxide |
a neutralisastion reaction between acid and alkali produces | salt and water |
some of the strong acids are: | hydrochloric acid, nitric acid and sulfuric acid |
some of the bases are | magnesium oxide, sodium hydroxide, calcium hydroxide and aqueous ammonia |
an indicator that can tell exact pH of a solution | universal indicator |
methyl orange turns | red in acid |
thymolphthalein turns | blue in base |