Chemistry
Grade-10
Easy
Question
Which one of the following statements is incorrect?
- Bases also depend on the concentration of hydronium ion.
- The scale for measuring the hydrogen ion concentration in a solution is called pH Scale.
- The reaction of acid and base is an endothermic reaction.
- The acids and bases are electrolytes which means that they are good conductors of electricity.
Hint:
An acid is any hydrogen-containing substance that is capable of donating a proton to another substance. A base is a molecule or ion able to accept a hydrogen ion from an acid.
The correct answer is: The reaction of acid and base is an endothermic reaction.
The statement "The reaction of acid and base is an endothermic reaction" is incorrect.
Energy is released when a bond is formed, while energy is required to break a bond. So in the case of acid and base reactions, no bond is being broken, bonds are only being formed.
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