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Problem: Before small batteries were available, carbide lamps were used for bicycle lights. Acetylene gas, C2H2, and solid calcium hydroxide were formed by the reaction of calcium carbide, CaC2, with water. The ignition of the acetylene gas provided the light. Currently, the same lamps are used by some cavers, and calcium carbide is used to produce acetylene for carbide cannons.(a) Outline the steps necessary to answer the following question: What volume of C2H2 at 1.005 atm and 12.2 °C is formed by the reaction of 15.48 g of CaC2 with water?(b) Answer the question.

FREE Expert Solution

Step 1

CaC2 + H2 C2H2 + Ca(OH)2

        Reactant    Product

Ca         1               1

C           2               2

H           2               4

O           1               2


CaC2 + 2 H2 C2H2 + Ca(OH)2

        Reactant    Product

Ca         1               1

C           2               2

H           2 4             4

O           1  2            2


Balanced: CaC2 + 2 H2 C2H2 + Ca(OH)2


Step 2

15.48 g CaC2 ×1 mol CaC264.1 g CaC2×1 mol C2H21 mol CaC2 = 0.2415 mol C2H2


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Problem Details

Before small batteries were available, carbide lamps were used for bicycle lights. Acetylene gas, C2H2, and solid calcium hydroxide were formed by the reaction of calcium carbide, CaC2, with water. The ignition of the acetylene gas provided the light. Currently, the same lamps are used by some cavers, and calcium carbide is used to produce acetylene for carbide cannons.

(a) Outline the steps necessary to answer the following question: What volume of C2H2 at 1.005 atm and 12.2 °C is formed by the reaction of 15.48 g of CaC2 with water?

(b) Answer the question.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Gas Stoichiometry concept. If you need more Gas Stoichiometry practice, you can also practice Gas Stoichiometry practice problems.

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Based on our data, we think this problem is relevant for Professor Lawrence's class at GVSU.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.