Neutralisation Flashcards
What is neutralisation?
Neutralisation is a chemical reaction between an acid and a base that produces a salt and water.
What are the products of a neutralisation reaction?
The products of a neutralisation reaction are a salt and water.
True or False: Neutralisation reactions always produce carbon dioxide.
False.
Fill in the blank: An acid reacts with a ____ to undergo neutralisation.
base
What is the general formula for a neutralisation reaction?
HA + BOH → BA + H2O, where HA is the acid and BOH is the base.
What type of pH results from a neutralisation reaction?
A neutralisation reaction typically results in a pH of 7.
Name one common strong acid used in neutralisation.
Hydrochloric acid (HCl).
Name one common strong base used in neutralisation.
Sodium hydroxide (NaOH).
What is the role of water in a neutralisation reaction?
Water is one of the products formed during a neutralisation reaction.
True or False: Neutralisation can occur in both aqueous and non-aqueous solutions.
True.
What type of reaction is neutralisation classified as?
A double displacement reaction.
What is an example of a weak acid that can undergo neutralisation?
Acetic acid (CH3COOH).
What is an example of a weak base that can undergo neutralisation?
Ammonium hydroxide (NH4OH).
What is the importance of neutralisation in everyday life?
Neutralisation is important for regulating pH in various applications, including agriculture and medicine.
Fill in the blank: The reaction of sulfuric acid and sodium hydroxide produces sodium ____.
sulfate
What is the term for the point in a titration where neutralisation occurs?
The equivalence point.
True or False: All neutralisation reactions are exothermic.
False.
What is the endpoint in a neutralisation titration?
The point at which the indicator changes color, indicating that neutralisation is complete.
How can you determine the pH of a solution after a neutralisation reaction?
By using pH indicators or pH meters.
What is the purpose of an indicator in a neutralisation reaction?
To signal the completion of the reaction by changing color.
What is the neutralisation reaction between hydrochloric acid and sodium bicarbonate?
HCl + NaHCO3 → NaCl + CO2 + H2O.
What happens to the pH of an acid when it is neutralised?
The pH increases towards neutral (7).
What happens to the pH of a base when it is neutralised?
The pH decreases towards neutral (7).
True or False: Neutralisation reactions can produce gas.
True.
What is the term for the salt produced from the reaction of nitric acid and potassium hydroxide?
Potassium nitrate (KNO3).
What is the effect of temperature on neutralisation reactions?
Temperature can affect the rate of reaction and the extent of heat released.
What is a common use of neutralisation in agriculture?
To adjust soil pH for optimal crop growth.
Fill in the blank: In a neutralisation reaction, the acid donates a proton (H+) to the ____.
base
What type of neutralisation reaction occurs in the stomach?
The neutralisation of gastric acid by antacids.
What gas is produced when hydrochloric acid reacts with sodium carbonate?
Carbon dioxide (CO2).
True or False: Neutralisation reactions are always safe and non-hazardous.
False.
What is the significance of neutralisation in wastewater treatment?
To neutralise acidic or basic wastes before discharge into the environment.
What is the neutralisation reaction between phosphoric acid and sodium hydroxide?
H3PO4 + NaOH → Na3PO4 + H2O.
What is a common household item that can act as a base in neutralisation?
Baking soda (sodium bicarbonate).
Fill in the blank: The neutralisation of an acid with a carbonate produces ____ in addition to salt and water.
carbon dioxide
What is the term for the reaction of a strong acid with a strong base?
Complete neutralisation.
What happens to the temperature of the solution during exothermic neutralisation?
The temperature of the solution increases.
What is A precipitate
An insoluble solid that forms when two solutions react, often occurring in neutralization if one product is insoluble.
What is Buffer?
A solution that resists changes in pH upon adding small amounts of acid or base.
