Question

What is Acid ?
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Answer 1

An acid is a molecule or ion capable of donating a proton, or, alternatively, capable of forming a covalent bond with an electron pair. The first category of acids are the proton donors, or Brønsted–Lowry acids.

Answer 2

Below in Bold

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♨ The word ' acid ' is derived from the Latin word ' acidus ' which means sour. An acid is defined as the substance which gives hydrogen ions or protons ( H+ ) when dissolved in water. For example :

• Hydrochloric acid
• Sulphuric acid
• Nitric acid
• Carbonic acid
• Acetic acid

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☃ Physical properties :

• Acids have a sour taste. But some acids like steric acid, boric acid , salisylic acid do not have a sour taste. Laboratory acids are more corrosive , so they are dangerous to taste.
• Acid turn blue colour of litmus paper into red and light yellow methyl orange into red. They make phenolphthalein colourless.

☂ Chemical properties :

• Acids have a high dissolving power and dissolve many substances. Some metals like zinc and magnesium react with acids like dilute sulphuric acid and dilute hydrochloric acid to produce salt and hydrogen gas.
• Acid react with base to give salt and water.
• Acid gives H+ ions when dissolved in water.
• Acid react with metallic carbonates to produce carbon dioxide.

☼ Hope I helped! ♡

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