educake 24/9/24 Flashcards
(28 cards)
Soluble salts can be made by mixing acids and alkalis. What name is given to this type of reaction?
Neutralization
What name is given to substances (both soluble and insoluble) such as metal hydroxides and metal oxides that can neutralise acids?
Bases neutralise acids.
What salt is produced when copper oxide reacts with hydrochloric acid?
Copper oxide produces copper salts. Hydrochloric acid produces chloride salts. These react together to form copper chloride.
Copper sulfate is a soluble salt that can be made from copper oxide and which acid?
To produce sulfate salts, sulfuric acid is required.
Which salt is formed when CaCO3 reacts with sulfuric acid? Give the full name, not the symbols.
Calcium from the carbonate and sulfate ions from the sulfuric acid react to make calcium sulfate.
Which two words complete this equation for the neutralisation reaction?
sodium hydroxide + __________ → sodium chloride + water
Hydrochloric acid produces chloride salts.
Sodium chloride is a soluble salt that can be made by mixing sodium hydroxide with which acid? Give the name, not the formula.
To produce chloride salts, hydrochloric acid is required.
When an acid reacts with a carbonate, a salt and water are produced along with another product. Name this product. Give the name, not the symbols.
carbon dioxide
Carbonates release carbon dioxide gas when they react with acids.
What salt is produced when sodium hydroxide reacts with sulfuric acid?
sodium sulfate
Sodium hydroxide produces sodium salts. Sulfuric acid produces sulfate salts. These react together to form sodium sulfate.
When an acid reacts with a base a salt is produced along with another product. Name this product.
water
acid + base → salt + water
Water is always produced during a reaction between an acid and a base.
What quantity is measured in g/dm3?
Concentrations are a measure of mass per unit volume (g/dm3).
Sam prepares a solution of sodium chloride with a concentration of 8 g/dm3. If he only used 2 g of sodium chloride, what volume of water did he dissolve it in, in cm3?
volume = mass ÷ concentration
volume = 2 ÷ 8 = 0.25 dm3
Multiply by 1000 to convert to cm3:
0.25 × 1000 = 250 cm3
What is the missing word in this word equation? acid + alkali → __________ + water
salt
When a carbonate reacts with an acid it produces carbon dioxide, a salt, and what other product? Give the name, not the formula.
water
Three salt solutions are to be used in an experiment, a 0.5 g/dm3 solution (solution 1), a 1.5 g/dm3 solution (solution 2) and a 2.5 g/dm3 solution (solution 3). Which solution is the most concentrated?
Solution 3 contains a higher mass of salt per cubic decimeter (g/dm3).
Three salt solutions are to be used in an experiment, a 0.5 g/dm3 solution (solution 1), a 1.5 g/dm3 solution (solution 2) and a 2.5 g/dm3 solution (solution 3). Which solution will contain the fewest salt particles in a particular volume?
Solution 1 contains the lowest concentration of salt. This means there are fewer particles per unit volume.
Which salt would form if you reacted hydrochloric acid with calcium hydroxide?
calcium chloride
The metal in a salt comes from the base (calcium).
Hydrochloric acid produces chloride salts.
So, the salt produced is calcium chloride.
In an experiment, dilute hydrochloric acid reacts with a white solid and bubbles of gas are produced. If this gas is bubbled through limewater, the limewater turns milky. The white solid is calcium ________. What is the missing word?
Carbonates react with acids to form carbon dioxide gas.
Besides the salt, name the other product that is formed when an acid reacts with an alkali. Give the name, not the formula.
water
acid + alkali → salt + water
Water is always produced during a reaction between an acid and an alkali.
Name the acid used to produce chloride salts.
hydrochloric acid
To produce chloride salts, hydrochloric acid is required.
A student dissolves 20 g of potassium chloride in 100 cm3 of water in a beaker. What is the concentration of the solution in g/dm3?
concentration = mass ÷ volume
Convert cm3 to dm3 by dividing the volume by 1000.
concentration = 20 ÷ (100 ÷ 1000) = 200 g/dm3
Magnesium oxide reacts with a particular acid to give the salt magnesium nitrate. Which acid must have been used?
nitric acid
To produce nitrate salts, nitric acid is required.
Magnesium sulfate can be made by reacting magnesium metal with which acid?
sulfuric acid
To produce sulfate salts, sulfuric acid is required.
Give the formula for hydrochloric acid.
HCL
Hydrochloric acid contains 1 hydrogen atom and 1 chlorine atom. The formula for hydrochloric acid is HCl (be careful, the last letter is a lowercase “L”, not an uppercase “i”!).
