Question

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Answer 1

Explanation:

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Answer 2

Answer:

A liquid substance that can dissolve metal and may burn your skin or clothes. Acids have a pH value of less than 7.

A strong acid is one that is completely dissociated or ionized in an aqueous solution. It is a chemical species with a high capacity to lose a proton, H+.

Examples:-

• Hydrobromic acid (HBr): pKa = -8.7.
• Perchloric acid (HClO4): pKa ≈ -8.
• Hydrochloric acid (HCl): pKa = -6.3.

A base is a substance that can neutralize the acid by reacting with hydrogen ions. Most bases are minerals that react with acids to form water and salts.

A strong base is a base that is completely dissociated in an aqueous solution. These compounds ionize in water to yield one or more hydroxide ion (OH-) per molecule of base. In contrast, a weak base only partially dissociates into its ions in water. Ammonia is a good example of a weak base.

Examples:-

• Potassium hydroxide (KOH)
• Sodium hydroxide (NaOH)
• Barium hydroxide (Ba(OH)2)
• Caesium hydroxide (CsOH)
• Sodium hydroxide (NaOH)

Alkali, any of the soluble hydroxides of the alkali metals—i.e., lithium, sodium, potassium, rubidium, and cesium. Alkalies are strong bases that turn litmus paper from red to blue; they react with acids to yield neutral salts; and they are caustic and in concentrated form are corrosive to organic tissues.

Example:-

• barium
• sodium
• ammonium
• calcium
• lithium
• potassium hydroxides.

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