Which of the following is a property of bases? (1 point)

1 answer:

7 0

Which of the following is a property of bases?

B. Feels slippery

This is most likely the Chemical Properties of Bases

The Chemical Properties of Bases include:

- Bases change the colour of litmus from red to blue.

- They are bitter in taste.

- Bases lose their basicity when mixed with acids.

- Bases react with acids to form salt and water. This process is called Neutralisation Reaction(Read).

- They can conduct electricity.

- Bases feel slippery or soapy.

- Some bases are great conductors of electricity.

- Bases like sodium hydroxide, potassium hydroxide, etc are used as electrolytes.

- Alkalis are bases that produce hydroxyl ions (OH-) when mixed with water.

- Strong alkalis are highly corrosive in nature whereas other alkalis are mildly corrosive.

- The pH value of bases ranges from 8-14.
Alkalis and ammonium salts produce ammonia.

- Hydrogen gas is evolved when metals react with a base.

- Bases are classified on the basis of strength, concentration and acidity.

- The different kinds of acids are strong base acid, weak base acid, concentrated base, dilute base, monoacidic base, diacidic base and triacidic base.

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See explanation

Explanation:

For this question, we have to remember the effect of an atom with high electronegativity as "Br". If the "Br" atom is closer to the carboxylic acid group (COOH) we will have an inductive effect. Due to the electronegativity of Br, the electrons of the C-H bond would be to the Br, then this bond would be weaker and the compound will be more acid (because is easier to produce the hydronium ion $H^+$ ).

With this in mind, for A in the last compound, we have 2 Br atoms near to the acid carboxylic group, so, we will have a high inductive effect, then the C-H would be weaker and we will have more acidity. Then we will have the compound with only 1 Br atom and finally, the last compound would be the one without Br atoms.

In B, the difference between the molecules is the position of the "Br" atom in the molecule. If the Br atom is closer to the acid group we will have a higher inductive effect and more acidity.

See figure 1

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