A Review Quiz On Acids And Bases! Test

Strong acids and strong alkalis are corrosive and/or caustic because they have the ability to cause damage or destroy materials they come into contact with. Corrosion refers to the gradual deterioration of a substance due to a chemical reaction, while caustic substances are capable of burning or destroying organic tissue. Strong acids and strong alkalis have high levels of reactivity and can cause severe burns or damage to surfaces, making them corrosive and/or caustic.

The chemical name for Vitamin C is ascorbic acid.

When magnesium reacts with hydrochloric acid, it undergoes a single displacement reaction, where magnesium displaces hydrogen from the hydrochloric acid. This results in the formation of magnesium chloride and hydrogen gas. Therefore, the correct answer is hydrogen.

The fizz in soft drinks is produced by adding carbonic acid. When carbon dioxide gas is dissolved in water, it forms carbonic acid, which gives the drink its characteristic fizziness. This acid is responsible for the bubbles and the refreshing sensation when consuming carbonated beverages. Citric acid, hydrochloric acid, and nitric acid are not typically used in soft drinks production and do not contribute to the fizziness.

Sodium hydrogen carbonate, also known as baking soda, is the compound in question. It is commonly used as an antacid to treat heartburn and acid indigestion in medical science. It is also used in fire extinguishers to control minor fires caused by electricity and for removing paint and corrosion from metallic surfaces. Its use in baking for leavening bread gives it the nickname "bread soda."

Baking powder contains an alkali because it is a mixture of a weak acid (such as cream of tartar) and a carbonate or bicarbonate (such as baking soda). When combined with liquid, the acid and alkali react to produce carbon dioxide gas, causing the dough or batter to rise. This reaction is known as the alkaline reaction and is characteristic of alkalis. Therefore, baking powder is the correct answer as it contains an alkali.

Methyl orange is a pH indicator that changes color depending on the acidity or alkalinity of a solution. In alkali conditions, which are basic or high in pH, methyl orange turns yellow. This is because the dye molecule in methyl orange is in its basic form, which reflects yellow light. Therefore, the correct answer is yellow.

Cyanic Acid has the formula HCNO. The other options, Hydrofluoric Acid, Hydrocyanic Acid, and Formic Acid, have different chemical formulas and do not match the given formula HCNO. Therefore, the correct answer is Cyanic Acid.

Aqua regia is named "Royal Water" because it has the unique ability to dissolve gold. This characteristic made it highly valuable and sought after, hence the association with royalty.

Vanadium pentoxide is the correct answer because it is a sparingly soluble, yellow solid. It is also known as an amphoteric compound, which means it can act as both an acid and a base. In the Contact Process for the industrial preparation of sulphuric acid, vanadium pentoxide acts as a catalyst for the high-temperature oxidation of sulfur dioxide to sulfur trioxide. Additionally, vanadium pentoxide is industrially important and can be used as a catalyst in the preparation of various acids, including oxalic acid, adipic acid, and acrylic acid.