Science, asked by aanafatima0786, 6 months ago

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Fill in the blanks-
The chemical formula of plaster of parisis
Neutral substances have a pH=
Gold can be dissolved in
Commonoly used antacidis
Science Class - 10​

Answers

Answered by Brainly100
6

A. The Chemical Formula of Plaster of Paris is

Ca(SO {}_{4} ) \:  • \:  \frac{1}{2} H_2O

Explanation:

Plaster of Paris, is a fine white powder which hardens itself when it is moistened and then allowed to dry. It occurs because of conversion of it into gypsum due to addition of water. It is used for plastering broken parts in injury.

B. The pH of Neutral Substance is 7.

Explanation:

pH scale has a range from 1 to 14. The substance whose pH lies between 1-7 are called acidic substance whereas the substance whose pH range stays between 7-14. 7 stands for neutral substance ( which is neither acidic nor basic ).

The acidity of a substance decreases from 1 to 14 whereas the basicity increases from 1 to 14. Example:

Substance A has pH 3 and substance B has pH 5.

A is more acidic than B whereas B is more basic thah A.

C. Gold can be dissolved in Aqua regia.

Explanation:

Aqua regia is a chemical mixture of nitric acid and hydrochloric acid in molal ratio of 1:3. It is the latin term meaning 'Royal Water' which is a concentrated mixtures of acids. It is one of the most powerful and corrosive acid.

D. The most commonly used antacid is Milk of Magnesia.

Explanation:

The HCl which is present in our stomach is one of the protection against microbes. However due to overeating or disorder, the stomach releases more amount of hydrochloric acid which causes discomfort and burns in the stomach. The antacid is a kind of base containing calcium, magnesium, sodium bicarbonate etc. which neutralises excessive acid of stomach into water and salt. This makes the pH of the stomach under control and makes us feel comfortable.

Examples :

Milk of Magnesia (Magnesium Hydroxide)

Alternalgel (Aluminum Hydroxide gel)

Gaviscon

Answered by SarcasticAngel
28

Answer:

A. The Chemical Formula of Plaster of Paris is

Ca(SO {}_{4} ) \: • \: \frac{1}{2} H_2OCa(SO

4

)•

2

1

H

2

O

Explanation:

Plaster of Paris, is a fine white powder which hardens itself when it is moistened and then allowed to dry. It occurs because of conversion of it into gypsum due to addition of water. It is used for plastering broken parts in injury.

B. The pH of Neutral Substance is 7.

Explanation:

pH scale has a range from 1 to 14. The substance whose pH lies between 1-7 are called acidic substance whereas the substance whose pH range stays between 7-14. 7 stands for neutral substance ( which is neither acidic nor basic ).

The acidity of a substance decreases from 1 to 14 whereas the basicity increases from 1 to 14. Example:

Substance A has pH 3 and substance B has pH 5.

A is more acidic than B whereas B is more basic thah A.

C. Gold can be dissolved in Aqua regia.

Explanation:

Aqua regia is a chemical mixture of nitric acid and hydrochloric acid in molal ratio of 1:3. It is the latin term meaning 'Royal Water' which is a concentrated mixtures of acids. It is one of the most powerful and corrosive acid.

D. The most commonly used antacid is Milk of Magnesia.

Explanation:

The HCl which is present in our stomach is one of the protection against microbes. However due to overeating or disorder, the stomach releases more amount of hydrochloric acid which causes discomfort and burns in the stomach. The antacid is a kind of base containing calcium, magnesium, sodium bicarbonate etc. which neutralises excessive acid of stomach into water and salt. This makes the pH of the stomach under control and makes us feel comfortable.

Examples :

Milk of Magnesia (Magnesium Hydroxide)

Alternalgel (Aluminum Hydroxide gel)

Gaviscon

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