Answer: The heat of combustion per mole for acetylene is 227.7 kJ/mol.
Explanation:
The combustion equation of acetylene is as follows.
Formula to calculate enthalpy of formation for a reaction is as follows.
![\Delta H^{o}_{rxn} = \sum \Delta H_{products} - \sum \Delta H_{reactants}\\\Delta H^{o}_{rxn} = [2\Delta H^{o}_{f}(CO_{2}) + \Delta H^{o}_{f} (H_{2}O)] - [\Delta H^{o}_{f}(C_{2}H_{2}) + \frac{5}{2} \Delta H^{o}_{f} O_{2}]\\-1299.5 = 2(-393.5) + (-285.8) - \Delta H^{o}_{f} (C_{2}H_{2})\\\Delta H^{o}_{f} (C_{2}H_{2}) = 227.7 kJ/mol](https://tex.z-dn.net/?f=%5CDelta%20H%5E%7Bo%7D_%7Brxn%7D%20%3D%20%5Csum%20%5CDelta%20H_%7Bproducts%7D%20-%20%5Csum%20%5CDelta%20H_%7Breactants%7D%5C%5C%5CDelta%20H%5E%7Bo%7D_%7Brxn%7D%20%3D%20%5B2%5CDelta%20H%5E%7Bo%7D_%7Bf%7D%28CO_%7B2%7D%29%20%2B%20%5CDelta%20H%5E%7Bo%7D_%7Bf%7D%20%28H_%7B2%7DO%29%5D%20-%20%5B%5CDelta%20H%5E%7Bo%7D_%7Bf%7D%28C_%7B2%7DH_%7B2%7D%29%20%2B%20%5Cfrac%7B5%7D%7B2%7D%20%5CDelta%20H%5E%7Bo%7D_%7Bf%7D%20O_%7B2%7D%5D%5C%5C-1299.5%20%3D%202%28-393.5%29%20%2B%20%28-285.8%29%20-%20%5CDelta%20H%5E%7Bo%7D_%7Bf%7D%20%28C_%7B2%7DH_%7B2%7D%29%5C%5C%5CDelta%20H%5E%7Bo%7D_%7Bf%7D%20%28C_%7B2%7DH_%7B2%7D%29%20%3D%20227.7%20kJ%2Fmol)
Thus, we can conclude that heat of combustion per mole for acetylene is 227.7 kJ/mol.
Answer:
Explanation:
In a nuclear reaction, the total mass and total atomic number remains the same.
Am has an atomic number of 95. So correct reaction is:-
To calculate A:
Total mass on reactant side = total mass on product side
343 + 4 = A + 2
A = 345
To calculate Z:
Total atomic number on reactant side = total atomic number on product side
95 + 2 = Z + 0
Z = 97
Hence, the isotopic symbol of unknown element is
When a compound containing C, H and O is completely combusted in air what reactant besides the hydrocarbon is involved in the reaction is Oxygen.
<h3>What is hydrocarbon?</h3>
A hydrocarbon is an organic molecule composed completely of hydrogen and carbon in organic chemistry. Group 14 hydrides include hydrocarbons. Hydrocarbons are often colourless and hydrophobic, with scents that are weak or exemplified by gasoline and lighter fluid. They exist in a wide range of molecular forms and phases, including gases (like methane and propane), liquids (like hexane and benzene), low melting solids (like paraffin wax and naphthalene), and polymers (such as polyethylene and polystyrene). Hydrocarbon refers to naturally occurring petroleum, natural gas, and coal, as well as their hydrocarbon derivatives and refined forms, in the fossil fuel industry. The primary source of energy on the planet is the combustion of hydrocarbons.
To learn more about hydrocarbons visit:
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AgNO3 ( aq ) + NaI ( aq ) = NaNO3 ( aq ) + AgI ( s ) .
