Acetylene, C2H2 (boiling point = –84°C), is produced by the reaction of solid calcium carbide, CaC2,...

Acetylene, C₂H₂ (boiling point = –84°C), is produced by the reaction of solid calcium carbide, CaC₂, and liquid water. Calcium hydroxide solution is the other product of the reaction. 127 kJ of energy is transferred to the atmosphere per mole of acetylene reacted. What mass of calcium carbide in kilograms and volume of water in gallons are needed to produce 125 cubic feet of acetylene at 17°C and 1.0 bar? What quantity of energy in megajoules will be transferred in the process?

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queen_honey_blossom answered 8 months ago

Before small batteries were available, carbide lamps were used for bicycle lights. Acetylene gas, C2H2, and...

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. What volume (in L) of C2H2 at 1.009 atm and 13.6°C is formed by the reaction of 15.18 g of CaC2...

The combustion of acetylene C2H2 is a spontaneous reaction given by the equation: 2C2H2 (g) +...

The combustion of acetylene C2H2 is a spontaneous reaction given by the equation: 2C2H2 (g) + SO2(g) --> 4CO2 (g) + 2 H2O(l) As expected for a combustion the a combustion the reaction is exothermic. a.) What is the sign of Delta H? b.) What do you expect for the sign of Delta S? c.) Explain the spontaneity of the reaction in terms of the enthalpy and entropy changes. Please show work and explain

Calculate ΔH∘ in kilojoules for the reaction of acetylene (C2H2) (ΔH∘f=227.4kJ/mol) with O2 to yield carbon...

Calculate ΔH∘ in kilojoules for the reaction of acetylene (C2H2) (ΔH∘f=227.4kJ/mol) with O2 to yield carbon dioxide (CO2)(ΔH∘f=−393.5 kJ/mol) and H2O(g) (ΔH∘f=−241.8kJ/mol), a reaction which is supplied by the industrial gases industry for oxyacetylene gas welding and cutting due to the high temperature of the flame. 2C2H2(g)+5O2(g)→4CO2(g)+2H2O(g) Express your answer using one decimal place.

Assuming the solvent selected has a boiling point below the melting point of the solid, which...

Assuming the solvent selected has a boiling point below the melting point of the solid, which factor is important for successful recrystallization? A. specific heat B. boiling point C. Melting point D. Solubility

A certain substance X has a normal boiling point of 101.5°C and a molar boiling point...

A certain substance X has a normal boiling point of 101.5°C and a molar boiling point elevation constant Kb = 1.49 °C/m. A solution is prepared by dissolving some urea (NH2)2CO in 200 g of X. This solution boils at 104.4°C. What is the mass of urea that was dissolved in the solution? A. 23.4 g B. 6.48 g C. 584 g D. 9.73 g E. 1.95 g Question 10 of 10 1.0 Points The normal freezing point of a...

The boiling point elevation constant for water is 0.51 degrees C/m. What is the boiling point...

The boiling point elevation constant for water is 0.51 degrees C/m. What is the boiling point of a solution made by dissolving 21.6g of a non-ionizing solute with a molar mass of 103.5 g/mol in 187g of water?

What is the boiling point of a solution prepared by adding 435.0 g of calcium perchlorate...

What is the boiling point of a solution prepared by adding 435.0 g of calcium perchlorate (Ca(Cl4)2, 283.98 g/mol) to 285 mL of water? The boiling point constant for water is 0.520 degrees Celcius/m.

a) The reaction temperature for this lab is significantly above the boiling point of the solvent...

a) The reaction temperature for this lab is significantly above the boiling point of the solvent used (ethanol boils at 78 o C; the reaction mixture was heated up to 140 o C). Why are we able to conduct reactions above the boiling point of the solvent when using our microwave oven in lab? b) Explain why hexane is a very poor choice as a solvent for a microwave reaction. c) After developing a TLC plate, a student looks at...

The boiling point of an aqueous solution is 102.34 °C. What is the freezing point?

The boiling point of an aqueous solution is 101.42 °C. What is the freezing point?

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