Acetic acid
Methanoic acid
Sulphuric acid
Hydrocholric acid
`CuO`
`Al_2O_3`
`Fe_(2)O_(3)`
`Na_(2)O`
Solution `A`
Solution `B`
Solution `C`
Solution `D`
2 3 4 1
2 4 3 1
1 4 3 2
1 3 4 2
Application of lime makes the soil acidic
High acidity in soil is typical of humid climate
Increasing soil acidity results in declining soil fertility
Arid climate is characterised by alkaline soil
Citric acid
Hydrochloric acid
Ascorbic acid
tartaric acid
`Al(OH)_3 (s)` and `Fe(OH)_3 (s)`
`Al(OH)_3 (s)` and `HCO_3^(-) (aq)`
`Ba(OH)_2 (s)` and `NaOH(aq)`
Only `Al(OH)_3 (s)`
acidic
basic
neutral
dependent on the amount of sodium chloride dissolved in water
baking soda
vinegar
lemon juice
alcohol
becomes < 6
remains the same, i.e., 6
becomes > 6
becomes neutral, i.e., 7
Acetic acid
ascorbic acid
citric acid
tartaric acid
acetic acid
nitric acid
hydrochloric acid
sulphuric acid
`H_2SO_4 > H_3PO_3 > CH_3COOH`
`H_3PO_3 > H_2SO_4 > CH_3COOH`
`CH_3COOH > H_3PO_3 > H_2SO_4`
`CH_3COOH > H_2SO_4 > H_3PO_3`
`K_4 [Fe(CN)_6 ]`
`K_2SO_ 4. Al_2(SO_4)_3 . 24H_2O`
`CuSO_4 . 5H_2O`
`NaCl `
must be pure water
must be an acid
is not a base
is neither a base nor an acid
red litmus
blue litmus
`Na_2CO_3`
`HCl` (aqueous)
oxygen from air is dissolved in the water which makes the water acidic
dirt, whd1 get contaminated with the water during aeration makes the water acidic
ultraviolet radiation dissociates water molecules and makes water acidic
carbon dioxide from air is dissolved
Salts have ordered packing arrangements called lattices
Salts have low melting points but high boiling points
Salts are brittle
Salts conduct electricity when dissolved in water or even in the molten state
1 and 2
1, 2 and 3
1 and 3
Only 2
ethanoic acid
valerie acid
methanoic acid
butanoic acid
is not a base
is not an acid
is neither an acid nor a base
must be pure water
4, 2, 1, 3
4, 1, 2, 3
4, 3, 2, 1
1, 2, 3, 4
7
> 7 but not 14
< 7
14
Lemon juice
Vinegar
Baking soda
Caustic soda
acetic acid
chloroform
carbon tetrachloride
ethyl alcohol
1 and 2
1 and 3
1, 2 and 3
2, 3 and 4
Sodium chloride
Copper sulphate
Ferric chloride
Sodium acetate