Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with: [4 MARKS]
a) Hydrochloric acid
b) Oxygen
c) Sulphuric acid
d) Water

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Solution

Each Part: 1 Mark

a) $2 N a + 2 H C l \to 2 N a C l + H_{2}$
$M g + 2 H C l \to M g C l_{2} + H_{2}$

b) $2 N a + O_{2} \to N a_{2} O_{2}$
$2 M g + O_{2} \to 2 M g O$

c) $2 N a + H_{2} S O_{4} \to N a_{2} S O_{4} + H_{2}$
$M g + H_{2} S O_{4} \to M g S O_{4} + H_{2}$

d) $2 N a + 2 H_{2} O \to 2 N a O H + H_{2}$
$2 M g + 2 H_{2} O \to 2 M g O H + H_{2}$

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[4 MARKS]

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Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with: [4 MARKS] a) Hydrochloric acid b) Oxygen c) Sulphuric acid d) Water

Each Part: 1 Mark a) 2Na+2HCl→2NaCl+H2 Mg+2HCl→MgCl2+H2 b) 2Na+O2→Na2O2 2Mg+O2→2MgO c) 2Na+H2SO4→Na2SO4+H2 Mg+H2SO4→MgSO4+H2 d) 2Na+2H2O→2NaOH+H2 2Mg+2H2O→2MgOH+H2

Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with: [4 MARKS]
a) Hydrochloric acid
b) Oxygen
c) Sulphuric acid
d) Water