chemical change: making soluble salts Flashcards
What is a soluble salt?
A soluble salt is a salt that dissolves in water to form a solution.
True or False: All salts are soluble in water.
False
What is the process of making soluble salts called?
Neutralization
Fill in the blank: A soluble salt can be formed by reacting an acid with a __________.
base
What type of reaction occurs when an acid reacts with a metal carbonate?
A neutralization reaction producing a salt, water, and carbon dioxide.
Which acid would you use to make sodium sulfate?
Sulfuric acid
What is the general formula for a salt formed from an acid and a base?
AB, where A is a cation from the base and B is an anion from the acid.
What is the byproduct of a reaction between an acid and a metal?
Hydrogen gas
True or False: All metal oxides are soluble in water.
False
What is the role of water in the process of making soluble salts?
Water acts as a solvent to dissolve the salt formed.
Name a common soluble salt.
Sodium chloride (table salt)
What is the first step in making a soluble salt from an acid and a base?
Mix the acid and base together.
Which base would you use to make potassium nitrate?
Potassium hydroxide
Fill in the blank: The process of evaporation is often used to __________ the solution to obtain the salt.
concentrate
What equipment is commonly used to evaporate water from a salt solution?
Evaporating dish
True or False: Soluble salts can be formed from weak acids and strong bases.
True
What is the significance of using distilled water in making soluble salts?
Distilled water is free from impurities that could affect the reaction.
What is the term for the solid salt that forms after evaporation?
Crystals
What is the expected outcome when hydrochloric acid reacts with sodium bicarbonate?
Sodium chloride, water, and carbon dioxide.
Which method can be used to determine the solubility of a salt?
Conducting a solubility test by adding the salt to water and observing if it dissolves.
Fill in the blank: To make a soluble salt, one must ensure that the acid and base are in __________.
stoichiometric proportions
What type of salts are typically formed from strong acids and strong bases?
Neutral salts
True or False: All soluble salts are neutral in pH.
False
What is the main characteristic of soluble salts when placed in water?
They dissociate into ions.
What is an example of a salt that can be formed from a strong acid and weak base?
Ammonium chloride
Fill in the blank: The balanced chemical equation for the formation of sodium sulfate from sulfuric acid and sodium hydroxide is __________.
H2SO4 + 2NaOH → Na2SO4 + 2H2O
What type of ion do acids release in solution?
Hydrogen ions (H+)
What is the main purpose of using indicators in the neutralization process?
To determine the endpoint of the reaction.
True or False: The solubility of salts can vary with temperature.
True
What is the final step in the process of making soluble salts after evaporation?
Collecting and drying the salt crystals.
What is the role of a titration in making soluble salts?
To accurately measure the volumes of acid and base needed for neutralization.
