Properties of acids
What taste do most acids have?
What taste do most bases have?
Bitter
What is the pH range for acidic solutions?
Below 7
What gas is produced when an acid reacts with a metal?
Hydrogen gas
What acid is found in citrus fruits like lemons and oranges?
Citric acid
What happens to blue litmus paper when it comes into contact with an acid?
It turns red.
What do bases feel like to the touch?
Slippery or soapy.
What is the pH of a neutral solution?
7
What is the general formula for the reaction between an acid and a base?
Acid + Base → Salt + Water.
What household product contains the base sodium hydroxide?
Soap
What happens to magnesium when it reacts with hydrochloric acid?
It produces H2 and MgCl2.
What happens to red litmus paper when it comes into contact with a base?
It turns blue.
If a solution has a pH of 3, is it acidic, basic, or neutral?
Acidic
What type of reaction occurs when an acid and a base react to form water and a salt?
Neutralization reaction.
What is the common name for sodium bicarbonate, a weak base?
Baking soda.
What effect do acids have on metals?
They react with metals to produce hydrogen gas.
What effect do bases have on fats or oils?
They can break down fats and oils through saponification.
If a solution has a pH of 10, is it acidic, basic, or neutral?
Basic.
What acid is produced when sulfur dioxide gas dissolves in water?
Sulfurous acid (H₂SO₃).
What acid is responsible for the sour taste of vinegar?
Acetic acid.
What happens to calcium carbonate (CaCO₃) when it reacts with hydrochloric acid?
It produces CO2, H2O, and CaCl2.
What is the Arrhenius definition of a base?
A substance that produces hydroxide ions OH- in water.
What is the pH of a solution with a hydrogen ion concentration of 1x10^-11 M?
pH=11.
What acid is commonly used in the laboratory to prepare hydrogen gas?
Hydrochloric acid (HCl).
What acid is responsible for the sharp taste in carbonated drinks?
Carbonic acid (H₂CO₃).