F2 - SEM2 - Common acids and alkalis - 9.3 Neutralization Flashcards
1
Q
What is neutralization?
What neutralization is
A
change the pH value to 7 (neutral)
What neutralization is
2
Q
What is the product of acid and alkali (reactants)?
What neutralization is
A
- salt and water (product)
- type of salt formed depends on the types of acid and alkali
What neutralization is
3
Q
True of False?
Mass of reactants (acid and alkali) and product (salt and water) is not conserved
What neutralization is
A
False
Mass of reactants (acid and alkali) and product (salt and water) is conserved
What neutralization is
4
Q
What are the applications of neutralization?
Mass of reactants (acid and alkali) and product (salt and water) is not conserved
A
- Brushing teeth (acidic) with toothpaste (alkaline) - bacteria in mouth changes sugars in food into acids
- Treating stomach ache with antacid (alkaline) - stomach produce acid to digest food, too much acid irritate the stomach wall
- Regulating soil pH (acidic) by adding lime (alkaline) - provide a pH that is suitable for crop growth
- Treat insect stings and bites - treat wasp stings (alkaline) with vinegar (acidic), treat bee stings and bites (acidic) with baking soda (alkaline)
- Treat chemical wastes - neutralize the wast before discharging into the sea
Mass of reactants (acid and alkali) and product (salt and water) is not conserved
