(49) Write general properties of Acid and Base. Define indicator
and explain how this indicators use for test of acid and base
along with name of indicators.
Answers
Property Acid Base
Taste Sour (vinegar) Bitter (baking soda)
Smell Frequently burns nose Usually no smell (except NH3!)
Texture Sticky Slippery
Reactivity Frequently react with metals to form H2 React with many oils and fats.
An acid-base indicator is either a weak acid or weak base that exhibits a color change as the concentration of hydrogen (H+) or hydroxide (OH-) ions changes in an aqueous solution. Acid-base indicators are most often used in a titration to identify the endpoint of an acid-base reaction. They are also used to gauge pH values and for interesting color-change science demonstrations.
Answer:
Property Acid
Base
Taste Sour (vinegar) Bitter (baking soda)
SmellFrequently burns nose Usually
no smell (except NH3!)
Texture Sticky Slippery
Reactivity Frequently react with metals to React with many oils and fats.
form H2
An acid-base indicator is either a weak acid or weak base that exhibits a color change as the concentration of hydrogen (H+) or hydroxide (OH-) ions changes in an aqueous solution. Acid-base indicators are most often used in a titration to identify the endpoint of an acid-base reaction. They are also used to gauge pH values and for interesting color-change science demonstrations.