Acids and Alkalis reactions

Acids and Alkalis reactions

Multiple Select

What are the products formed when calcium carbonate reacts with hydrochloric acid?

• calcium chloride

• carbon dioxide

• hydrogen

• water

Multiple Choice

What is the chemical test and observation for the gas evolved?

• Glowing splint relights.

• Lighted splint extinguishes with a 'pop' sound.

• Moist red litmus paper turns blue.

• White precipitate formed in limewater.

Let's view the reaction and gas test.

What's the chemical equation of the reaction between carbon dioxide and limewater?

Multiple Select

What are the formula of the products formed when zinc reacts with hydrochloric acid?

• ZnCl

• ZnCl₂

• H₂

• H₂O

• CO₂

Multiple Choice

What is the chemical test and observation for the gas produced?

• Glowing splint relights.

• Lighted splint extinguishes with a 'pop' sound.

• Moist red litmus paper turns blue.

• Moist blue litmus paper turns red.

Let's view the reaction and gas test.

Multiple Select

What are the two reactants that will react to produce sodium chloride, ammonia and water?

• ammonium chloride

• ammonium hydroxide

• hydrochloric acid

• sodium hydroxide

• sodium nitrate

Multiple Choice

What is the chemical test and observation for ammonia gas?

• Moist blue litmus paper turns red.

• Moist red litmus paper turns blue.

• Moist blue litmus paper turns red then bleaches.

• Glowing splint relights.

Let's view the reaction and gas test.

Multiple Choice

Phenolphthalein remains colourless when added to solution X.

Green universal indicator turns yellow when added to solution X.

What is likely to be the pH of solution X?

• 1

• 6

• 7

• 13