It should be determined that, how many grams of acetylene and how many litres of O 2 at standard pressure temperature (STP) are needed to generate 1000 k J of heat, in the oxyacetylene torch. Concept Introduction: STP: A system is said to have a temperature of zero degree centigrade ( 273 K ) and the atmosphere is always 1 atm, additionally one mole of any gas at STP occupies a volume of 22.414 L. Enthalpy change: The heat change when molar quantities of reactants as specific by the chemical equation react to form products at standard conditions. Enthalpy depends in the physical state of reactants and the products and the conditions under which the reaction occurs. Standard enthalpy formation : The standard enthalpy of formation Δ H f 0 are defined as the enthalpy change for the formation of one mole of given compound from it is constituent elements in their standard states.

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Chapter 18, Problem 18.55SP

Interpretation Introduction

Interpretation:

It should be determined that, how many grams of acetylene and how many litres of O2 at standard pressure temperature (STP) are needed to generate 1000 kJ of heat, in the oxyacetylene torch.

Concept Introduction:

STP: A system is said to have a temperature of zero degree centigrade (273 K) and the atmosphere is always 1 atm, additionally one mole of any gas at STP occupies a volume of 22.414 L.

Enthalpy change: The heat change when molar quantities of reactants as specific by the chemical equation react to form products at standard conditions.

Enthalpy depends in the physical state of reactants and the products and the conditions under which the reaction occurs.

Standard enthalpy formation: The standard enthalpy of formation ΔHf0 are defined as the enthalpy change for the formation of one mole of given compound from it is constituent elements in their standard states.

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