Group 2 Flashcards
Mg + H2O (l) —>
Mg (OH)2 + H2
Ca + H2O (l) –>
Ca (OH)2 + H2
Mg + H2O (g) —>
MgO + H2
which is the lease soluble groups 2 hydroxide
Mg(OH)2
what is most soluble group 2 hydroxide
Ba(OH)2
which is the lease soluble groups 2 sulfate
BaSO4
which is the mos soluble groups 2
MgSO4
what is the test for sulfate ions
BaCl2
what is observed when BaCl2 is added to CaSO4
white precipitate
BaSO4 is formed
what is observed when barium chloride is added to sulfuric acid
white precipitate
BaSO4 is formed
give a medical use of barium sulfate
Stomach X-rays
Barium metal
give a use for magnesium hydroxide
to neutralise stomach acid
magnesium chloride can be used to test for the present of which negative ions
Hydroxide ions (OH-)
Mg(OH)2 will form giving a white precipitate
what is observed when MgCl2 is added to NaOH
white precipitate
Mg(OH)2 is formed
Mg(OH)2 is sparingly soluble
state the trend in reactivity with water down the group
Reactivity increases
Mg is least reactive, Ba i most reactive
what group 2 trend increases down the group
Atomic radius
what type of bonding do all group 2 elements have
metallic
what is observed when Ba reacts with water
a colourless solution and effervescence (fizzing)
which compound is used to treat the symptoms of indigestion
Mg(OH)2
what product are formed when magnesium reacts with steam
Magnesium Oxide and hydrogen
MgO+H2
