Podcast
Questions and Answers
What are the products of the reaction between calcium carbide ($CaC_2$) and water ($H_2O$)?
What are the products of the reaction between calcium carbide ($CaC_2$) and water ($H_2O$)?
- $CaO$ and $CH_4$
- $CaCO_3$ and $H_2$
- $CaH_2$ and $CO_2$
- $Ca(OH)_2$ and $C_2H_2$ (correct)
Which gas is produced when calcium carbide ($CaC_2$) reacts with water?
Which gas is produced when calcium carbide ($CaC_2$) reacts with water?
- Carbon Dioxide ($CO_2$)
- Ethane ($C_2H_6$)
- Acetylene ($C_2H_2$) (correct)
- Methane ($CH_4$)
What type of compound is $Ca(OH)_2$, which is produced in the reaction of calcium carbide and water?
What type of compound is $Ca(OH)_2$, which is produced in the reaction of calcium carbide and water?
- Base (correct)
- Salt
- Acid
- Oxide
Which of the following is the balanced chemical equation for the reaction between calcium carbide and water?
Which of the following is the balanced chemical equation for the reaction between calcium carbide and water?
What is the chemical formula for calcium carbide?
What is the chemical formula for calcium carbide?
Flashcards
Calcium Carbide
Calcium Carbide
A chemical compound with the formula CaC2, used to produce acetylene.
Water
Water
A clear, colorless liquid essential for life, represented as H2O.
Acetylene
Acetylene
A colorless gas with a sweet odor, formed when CaC2 reacts with water.
Chemical Reaction
Chemical Reaction
Signup and view all the flashcards
Reaction Completion
Reaction Completion
Signup and view all the flashcards
Study Notes
Reaction Completion
-
Calcium carbide (CaC₂) reacts with water (H₂O) to produce acetylene (C₂H₂) and calcium hydroxide (Ca(OH)₂).
-
The balanced chemical equation represents the complete reaction: CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂
-
Note that this is a direct combination reaction and a displacement reaction.
-
The reaction is exothermic, meaning it releases heat.
-
The reaction is often carried out in a controlled manner, as it can be quite vigorous if not monitored carefully.
Acetylene (C₂H₂)
-
Acetylene is a highly flammable gas at room temperature.
-
Its chemical formula is C₂H₂.
-
Under standard laboratory conditions, it is a colorless gas and has an odor resembling garlic or burning gasoline.
-
It is used primarily in welding and cutting metals due to the high heat generated during its combustion.
-
Commercially, acetylene is generated by the reaction of calcium carbide (CaC₂) and water (H₂O)
-
It plays a vital role in various industrial applications.
Calcium Carbide (CaC₂)
- A greyish-white, crystalline material.
- Calcium carbide is produced by heating calcium oxide (lime) and coke in an electric furnace.
- Its chemical formula is CaC₂
- Highly reactive with water, producing acetylene.
- A vital intermediary in chemical synthesis.
- Impurities in the powder can affect the reaction.
Calcium Hydroxide (Ca(OH)₂)
- A white, powdery substance commonly known as slaked lime.
- It is a slightly alkaline material.
- The chemical formula is Ca(OH)₂
- Solid in standard form.
- It has a wide range of applications including use as a pH regulator and a building material.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Calcium carbide reacts with water to produce acetylene and calcium hydroxide. The balanced chemical equation is CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂. Acetylene is a highly flammable gas used in welding and cutting metals. This reaction is exothermic and needs to be carefully monitored.
