Question

Q1: State few properties of acids.


Q2: State few properties of bases.


Q3: What are the differences between acids and bases?


Q4: Give examples of some acids and bases


Q5: Define indicators along with examples.​

Answer 1

Answer:

1. Acids taste sour, conduct electricity when dissolved in water, and react with metals to produce hydrogen gas. Certain indicator compounds, such as litmus, can be used to detect acids. Acids turn blue litmus paper red. The strength of acids is measured on the pH scale.

2. Bases taste bitter, feel slippery, and conduct electricity when dissolved in water. Indicator compounds such as litmus can be used to detect bases. Bases turn red litmus paper blue. The strength of bases is measured on the pH scale.

3. An acid is a molecule or substance that has a pH value less than 7.0 when it is present in an aqueous solution. An aqueous solution is any solution where water is a solvent. Acids are termed as compounds that donate H+ (hydrogen ion) to another compound known as base.

A base (alkaline) is a molecule or substance that has a pH value higher than 7.0 when present in an aqueous solution. Bases are the exact chemical opposite of acids. In chemistry. They are substances that, in aqueous solution, release hydroxide (OH−) ions.

4. Example of acid :- sulfuric acid, nitric acid, hydrochloric acid, citric acid, and acetic acid.

Example of base :- sodium hydroxide, calcium carbonate and potassium oxide.

5. Any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

Answer 2

Answer:

Q1. properties of acids

1. they r sour
2. corrosive
3. produce hydronic ions when reacted with water.

Q2 properties of bases

1. feels slippery
2. tastes bitter
3. turn red litmus blue.

Q3 difference between acids and bases

acids

• turn blue litmus red
• produce positively charged hydronium ions
• tastes sour

bases

• turn red litmus blue
• produce hydroxyl ions
• taste bitter

Q4 Examples of acids and bases

acids

• hydrochloric acid
• sulphuric acid
• nitric acid
• citric acid
• tartaric acid
• malic acid
• carbonic acid etc.......

bases

• sodium hydroxide
• potassium hydroxide
• calcium oxide
• zinc oxide
• lead oxide etc........

Q5 Indicators

Indicators are chemical substances added to a solution to determine whether it is an acid or a base

examples : phenophtalein, methyl orange,litmus

HOPE IT HELPS...

HAVE A NICE DAY..

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@ sathvika chowdary