Lime Water and Carbon Dioxide

The video tutorial explains how carbon dioxide turns lime water milky. By breathing into a tube containing lime water, which is a solution of calcium hydroxide, the solution turns cloudy due to the formation of calcium carbonate. This occurs because the carbon dioxide in the breath reacts with calcium hydroxide to produce calcium carbonate, a solid precipitate that gives the milky appearance. The video concludes by summarizing the experiment and confirming that carbon dioxide is the gas responsible for this reaction.

Which gas is responsible for turning lime water milky?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Hydrogen

What is lime water a solution of?

• Sodium Chloride

• Potassium Hydroxide

• Calcium Hydroxide

• Calcium Carbonate

What solid precipitate forms when carbon dioxide reacts with lime water?

• Calcium Sulfate

• Calcium Nitrate

• Calcium Chloride

• Calcium Carbonate

What is the appearance of the precipitate formed in the lime water reaction?

• Clear

• Green

• Blue

• Milky White

Who is the presenter of the video?

• Dr. C

• Dr. A

• Dr. B

• Dr. D