1) An oxyacetylene torch is a tool that mixes and burns oxygen and acetylene to produce an extremely hot flame. This tool is used to cut steel or weld iron and other metals. The temperature of the film can reach 3480°C. The burning of acetylene is given by the thermochemical equation:C2H2(g) + 1%CO2(g) → CO2(g) + H2O(1) AH-1301.1 kJ. For the reaction, 2CO2(g) + 2H2O(1)→ 2C2H2(g) + 3CO2(g) what is the ∆H for the reaction? A. ∆H-1301.1 kJ/mol B. ΔΗ = - 2602.2 kJ/mol C. ΔΗ = +1301.1 kJ/mol D. ΔΗ = +2602.2 kJ/mol 2) The change in the energy between a chemical reaction and the surroundings at constant temperature is called A. enthalpy change B. enthalpy profile C. enthalpy D. dynamic enthalpy 3) Changes in enthalpy in an exothermic reaction is A. neutral B. negative C. constant D.positive 4) The heat of reaction refers to A. The heat released after burning 1 mole of a substance. B. The heat released or absorbed during a chemical reaction. C. The amount of heat needed to melt 1 mole of a solid. D. The heat released by 1 mole of a substance as it changes from a liquid to a solid.
1) An oxyacetylene torch is a tool that mixes and burns oxygen and acetylene to produce an extremely hot flame. This tool is used to cut steel or weld iron and other metals. The temperature of the film can reach 3480°C. The burning of acetylene is given by the thermochemical equation:C2H2(g) + 1%CO2(g) → CO2(g) + H2O(1) AH-1301.1 kJ. For the reaction, 2CO2(g) + 2H2O(1)→ 2C2H2(g) + 3CO2(g) what is the ∆H for the reaction? A. ∆H-1301.1 kJ/mol B. ΔΗ = - 2602.2 kJ/mol C. ΔΗ = +1301.1 kJ/mol D. ΔΗ = +2602.2 kJ/mol 2) The change in the energy between a chemical reaction and the surroundings at constant temperature is called A. enthalpy change B. enthalpy profile C. enthalpy D. dynamic enthalpy 3) Changes in enthalpy in an exothermic reaction is A. neutral B. negative C. constant D.positive 4) The heat of reaction refers to A. The heat released after burning 1 mole of a substance. B. The heat released or absorbed during a chemical reaction. C. The amount of heat needed to melt 1 mole of a solid. D. The heat released by 1 mole of a substance as it changes from a liquid to a solid.
1) An oxyacetylene torch is a tool that mixes and burns oxygen and acetylene to produce an extremely hot flame. This tool is used to cut steel or weld iron and other metals. The temperature of the film can reach 3480°C. The burning of acetylene is given by the thermochemical equation:C2H2(g) + 1%CO2(g) → CO2(g) + H2O(1) AH-1301.1 kJ. For the reaction, 2CO2(g) + 2H2O(1)→ 2C2H2(g) + 3CO2(g) what is the ∆H for the reaction? A. ∆H-1301.1 kJ/mol B. ΔΗ = - 2602.2 kJ/mol C. ΔΗ = +1301.1 kJ/mol D. ΔΗ = +2602.2 kJ/mol 2) The change in the energy between a chemical reaction and the surroundings at constant temperature is called A. enthalpy change B. enthalpy profile C. enthalpy D. dynamic enthalpy 3) Changes in enthalpy in an exothermic reaction is A. neutral B. negative C. constant D.positive 4) The heat of reaction refers to A. The heat released after burning 1 mole of a substance. B. The heat released or absorbed during a chemical reaction. C. The amount of heat needed to melt 1 mole of a solid. D. The heat released by 1 mole of a substance as it changes from a liquid to a solid.
1) An oxyacetylene torch is a tool that mixes and burns oxygen and acetylene to produce an extremely hot flame. This tool is used to cut steel or weld iron and other metals. The temperature of the film can reach 3480°C. The burning of acetylene is given by the thermochemical equation:C2H2(g) + 1%CO2(g) → CO2(g) + H2O(1) AH-1301.1 kJ. For the reaction,
2CO2(g) + 2H2O(1)→ 2C2H2(g) + 3CO2(g)
what is the ∆H for the reaction?
A. ∆H-1301.1 kJ/mol
B. ΔΗ = - 2602.2 kJ/mol
C. ΔΗ = +1301.1 kJ/mol
D. ΔΗ = +2602.2 kJ/mol
2) The change in the energy between a chemical reaction and the surroundings at constant temperature is called
A. enthalpy change
B. enthalpy profile
C. enthalpy
D. dynamic enthalpy
3) Changes in enthalpy in an exothermic reaction is
A. neutral
B. negative
C. constant
D.positive
4) The heat of reaction refers to
A. The heat released after burning 1 mole of a substance.
B. The heat released or absorbed during a chemical reaction.
C. The amount of heat needed to melt 1 mole of a solid.
D. The heat released by 1 mole of a substance as it changes from a liquid to a solid.
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
