Question

Name of the acid present in these elements & Name of the base present in these elements.

Vinegar

Orange and lemon

Curd

Tamarind

_____


soap and paper.
bleaching powder
Antacids
Wasting soda
​

Answer 1

$\qquad$ ⑴ Vinegar - Acetic acid.

$\qquad$ ⑵Orange and lemon - Citric acid.

$\qquad$ ⑶ Curd - Lactic acid.

$\qquad$ ⑷Tamarind - Tartaric acid.

$\qquad$ ⑴ Soap and paper- Sodium hydroxide.

$\qquad$ ⑵- Bleaching powder - Calcium hydroxide.

$\qquad$ ⑶ Antacids -Magnesium hydroxide.

$\qquad$ ⑷ Wasting soda -Sodium carbonate.

Know More :-

• Acids are those chemical substances which taste are sour in taste and changes the colour of blue litmus solution to red.

$\sf \underline{Properties\:of\:Acids :}$

• Acids are sour in taste.
• Acids turn blue litmus to red.
• Acids solutions are electrolytes (conducts electricity).
• They can react with metals to form hydrogen gas.

$\sf\underline{Example :}$

• Tomato - Oxalic acid.

• Bases are the chemical substances. They are bitter in taste.

$\sf\underline{Properties\:of \:bases :}$

• They are bitter in taste.
• Bases feel soapy to touch.
• Bases turns red litmus to blue.
• They are electrolytes.
• They react with acids to form salt and water.
• Bases can react with metals to create hydrogen gas.

$\sf\underline{Examples :}$

• Sodium hydrogencarbonate - baking powder.

Answer 2

Answer:

(a)Vinegar is a combination of acetic acid and water made by a two-step fermentation process.

(b)Lemon and lime juice, both from the fresh fruit and from juice concentrates, provide more citric acid per liter than ready-to-consume grapefruit juice, ready-to-consume orange juice, and orange juice squeezed from the fruit.

(c)In fermented products like curd and buttermilk, most of the lactose is converted to lactic acid/acetic acid by the enzymes that are found in fermenting bacteria.

(d)Tartaric acid is the major acid present in tamarind pulp which gives the pulp acidic taste.

soap and paper.

bleaching powder

Antacids

Wasting soda these all are bases.