Explore BrainMass

Explore BrainMass

    Hydrocarbon acetylene, C2H2 is used in welders' torches

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    1. The gaseous hydrocarbon acetylene, C2H2 is used in welders' torches because of the large amount of heat released when acetylene burns with oxygen, producing carbon dioxide and water. First, write a balanced equation fro the combustion of acetylene is oxygen. Then, how many grams of oxygen are needed for the complete combustion of 150 grams of acetylene? Finally, how many carbon dioxide molecules are formed in this reaction?

    2. Many metals occur naturally as sulfide compounds, including CuS and CoS. Air pollution often accompanies the processing of these ores, because toxic sulfur dioxide is released as the ore is converted from the sulfide to the oxide by smelting. Consider the reaction of zinc sulfide with oxygen to form zing oxide and sulfur dioxide. First, write a balanced equation for this reaction. Then how many kilograms of sulfur dioxide are produced when 100 kilograms of zinc sulfide is smelted in excess oxygen by this process. Finally, how many moles of zinc oxide are formed?

    © BrainMass Inc. brainmass.com March 4, 2021, 6:41 pm ad1c9bdddf
    https://brainmass.com/chemistry/energetics-and-thermodynamics/hydrocarbon-acetylene-c2h2-is-used-in-welders-torches-56521

    Solution Preview

    1. Write a balanced equation:
    C2H2 + (5/2)O2 = 2CO2 + H2O
    Molecular weight of C2H2 = 24 + 2 =26 (g/mol)
    Number of mole of C2H2 = 150/26 = 5.77 (mol)
    So the number of moles of O2 required ...

    Solution Summary

    The solution provides detailed calculations and explanations for the problem.

    $2.49

    ADVERTISEMENT