Acid, Bases and Salts
Category : 7th Class
Acids, Bases and Salts
Synopsis
(i) Sour in taste
(ii) Corrosive in nature
(iii) Turns blue litmus to red
(i) Bitter to taste
(ii) Feels soapy on touching
(iii) Turns red litmus to blue
|
Litmus |
Phenolphthalein |
Methyl orange |
Acid |
Blue to Red |
Colour less |
Orange to Red |
Base |
Red to Blue |
Pink |
Orange to yellow |
Neutral |
Purple |
Colour less |
Orange |
Acid + Base \[\to \]Salt + Water (Heat is evolved)
e.g., Hydrochloric acid (HC/) + Sodium hydroxide \[(NaOH)\to \]
Sodium chloride (NaCl) + Water \[({{H}_{2}}O)\]
(i) treating indigestion
(ii) treating ant bite
(iii) soil treatment
(iv) treating factory wastes
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