11
PRESENTATION ONPRESENTATION ON
ACIDS, BASES AND SALTSACIDS, BASES AND SALTS
BYBY
N SAI DEEPIKAN SAI DEEPIKA
&&
N SAI DE...
ACIDSACIDS
 AcidsAcids are those substances which are sourare those substances which are sour
in taste, produce burning s...
33
ACIDS
44
NAME OF ACID FOUND IN
Acetic Acid Vinegar
Formic acid Ant’s sting
Citric Acid Citrus foods such as oranges,
lemons etc
...
BASESBASES
 Bases are those substances which are bitterBases are those substances which are bitter
in taste, are soapy to...
66
BASES WE EAT
77
NAME OF BASES FOUND IN
Calcium Hydroxide Lime Water
Ammonium
Hydroxide
Window Cleaner
Sodium
Hydroxide/Potassium
Hydrox...
INDICATORSINDICATORS
 The special substances which are used toThe special substances which are used to
test whether a sub...
99
LITMUS PAPER
NEUTRALISATIONNEUTRALISATION
 The reaction between an acid and a base isThe reaction between an acid and a base is
known ...
ACTIVITY TEST WITH DIFFERENTACTIVITY TEST WITH DIFFERENT
INDICATORSINDICATORS
1111
TEST SOLUTION CHINA ROSE
INDICATOR
TURM...
1212
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Acid bases and salts 17 jul 13

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Acid bases and salts 17 jul 13

  1. 1. 11 PRESENTATION ONPRESENTATION ON ACIDS, BASES AND SALTSACIDS, BASES AND SALTS BYBY N SAI DEEPIKAN SAI DEEPIKA && N SAI DEEPAKN SAI DEEPAK
  2. 2. ACIDSACIDS  AcidsAcids are those substances which are sourare those substances which are sour in taste, produce burning sensation onin taste, produce burning sensation on touching and which turn blue litmus to red.touching and which turn blue litmus to red. Examples – Citric acid, oxalic acid,Examples – Citric acid, oxalic acid, hydrochloric acid.hydrochloric acid.  Curd, lemon juice, orange juice and vinegarCurd, lemon juice, orange juice and vinegar taste sour. These substances taste sourtaste sour. These substances taste sour because they contain acids.because they contain acids.  The chemical nature of such substances isThe chemical nature of such substances is aa acidicacidic. The word acid comes from the Latin. The word acid comes from the Latin wordword acereacere which means sour.which means sour. 22
  3. 3. 33 ACIDS
  4. 4. 44 NAME OF ACID FOUND IN Acetic Acid Vinegar Formic acid Ant’s sting Citric Acid Citrus foods such as oranges, lemons etc Lactic Acid Curd Oxalic Acid Spinach Ascorbic Acid (Vit ‘C’) Amla, citrus fuits Tartaric Acid Tamarid, grapes, unripe mango etc
  5. 5. BASESBASES  Bases are those substances which are bitterBases are those substances which are bitter in taste, are soapy to touch and which turnin taste, are soapy to touch and which turn red litmus to blue. Example Sodiumred litmus to blue. Example Sodium Hydroxide, Potassium hydroxide etc.Hydroxide, Potassium hydroxide etc.  The nature of such substances is said to beThe nature of such substances is said to be basic.basic. 55
  6. 6. 66 BASES WE EAT
  7. 7. 77 NAME OF BASES FOUND IN Calcium Hydroxide Lime Water Ammonium Hydroxide Window Cleaner Sodium Hydroxide/Potassium Hydroxide Soap Magnesium Hydroxide Milk of Magnesia
  8. 8. INDICATORSINDICATORS  The special substances which are used toThe special substances which are used to test whether a substance is acidic or basictest whether a substance is acidic or basic are known as indicatorsare known as indicators  The indicators change colour when added toThe indicators change colour when added to a solution containing an acidic or a basica solution containing an acidic or a basic substance.substance.  Some of the naturally occurring indicatorsSome of the naturally occurring indicators areare turmeric, litmus, china rose petals etc.turmeric, litmus, china rose petals etc. 88
  9. 9. 99 LITMUS PAPER
  10. 10. NEUTRALISATIONNEUTRALISATION  The reaction between an acid and a base isThe reaction between an acid and a base is known as neutralization. Salt and water areknown as neutralization. Salt and water are produced in this process with the evolutionproduced in this process with the evolution of heat.of heat.  In neutralization reaction heat is alwaysIn neutralization reaction heat is always produced or evolved.produced or evolved.  In neutralization reaction a new substanceIn neutralization reaction a new substance is formed. This is called salt. Salt may beis formed. This is called salt. Salt may be acidic, basic or neutral in nature.acidic, basic or neutral in nature. 1010
  11. 11. ACTIVITY TEST WITH DIFFERENTACTIVITY TEST WITH DIFFERENT INDICATORSINDICATORS 1111 TEST SOLUTION CHINA ROSE INDICATOR TURMERIC INDICATOR LITMUS SOLUTION BLUE/RED HCL (Hydrochloric Acid) Red No change Blue to Red NAoH Sodium Hydroxide Green Red Red to Blue Soap solution Green Red Red to Blue Baking Powder Green Red Red to Blue Lemon Juice/ Tomato Juice Red No Change Blue to Red Vinegar Red No Change Blue to Red Sugar No Change No Change No Change
  12. 12. 1212
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