Share Acid, Base and Salts
Save to Folder
According to the Brønsted-Lowry definition, what is a base?
A proton acceptor
A neutral substance
A proton donor
What is an acid according to the Brønsted-Lowry theory?
A proton donor
A neutral substance
A proton acceptor
Which indicator is used in titrations involving a strong acid and a strong base?
Thymolphthalein
Phenolphthalein
Universal indicator
What is the color change of methyl orange in acid and alkali?
Blue in acid, red in alkali
Red in acid, yellow in alkali
Yellow in acid, blue in alkali
Which indicator is blue in an alkaline solution and colorless in acid?
Universal indicator
Methyl orange
Phenolphthalein
What type of oxide is formed when a metal reacts with oxygen?
Acidic oxide
Amphoteric oxide
Basic oxide
Which of the following is an example of an acidic oxide?
CaO
CO₂
Na₂O
Which oxide reacts with both acids and bases to form salts?
Basic oxide
Neutral oxide
Amphoteric oxide
Which of the following is an example of an amphoteric oxide?
Filtration, crystallization
Fractional distillation
Simple distillation
How can an insoluble salt be prepared?
Filtration of a solution
Precipitation
Evaporation
What is the name of the method used to prepare a soluble salt from an acid and a soluble base?
Titration
Precipitation
Crystallization
What type of reaction occurs when an acid reacts with a base?
Neutralization
Oxidation
Decomposition
What is the ionic equation for neutralization?
HCl + NaOH → NaCl + H₂O
Na⁺ + OH⁻ → NaOH
H⁺ + OH⁻ → H₂O
What happens to the hydrogen ions when an acid is neutralized?
They turn into oxygen gas
They react with hydroxide ions to form water
They evaporate
What is the correct balanced equation for the reaction between hydrochloric acid and sodium hydroxide?
HCl + NaOH → Na + Cl₂ + H₂O
HCl + NaOH → NaOH + H₂
HCl + NaOH → NaCl + H₂O
What is the formula of the salt formed when sulfuric acid reacts with potassium hydroxide?
K₂SO₄
KNO₃
KCl
