Acids & Redox Flashcards
Why is calcium nitrate an example of a salt? (1)
The H+ ion in nitric acid has been replaced by a metal ion (Ca2+)
Explain how the hydroxide ion in aqueous calcium hydroxide acts as a base when it neutralises dilute nitric acid. (1)
accepts a proton
What term is given to the ‘*x H2O’ part of a formula? (1)
water of crystallisation
Define: salt
when the H+ ion in an acid is replaced by a metal ion
Why is ammonia acting as a base in this neutralisation? (1)
accepts a proton
Suggest how Magnesium oxide becomes contaminated (1)
MgO has reacted with CO2
Define: an acid
a proton donor
State one important use for the compound: (NH4)2SO4
fertiliser
How do you calculate volume of gas?
volume of gas = mole x 24
Define: the mole
Amount of substance that has the same number of particles as there are atoms in 12g of Carbon-12
What is a common use for: NaClO. (1)
bleach
Define: a strong acid
An acid that fully dissociates in water
Define: a weak acid
An acid that partially dissociates in water
State the three definitions of reduction. (3)
- gain of electrons
- loss of hydrogen
- loss of oxygen
