Purchase Solution

Hydrocarbon acetylene, C2H2 is used in welders' torches

Not what you're looking for?

Ask Custom Question

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?

Purchase this Solution

Solution Summary

The solution provides detailed calculations and explanations for the problem.

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 ...

Purchase this Solution

Free BrainMass Quizzes

The quiz helps in revising basic concepts about thermochemistry.

Functional groups in Organic Chemistry

You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.

Match Elements with their Symbols

Elements are provided: choose the matching one- or two-letter symbol for each element.

Organic Chemistry Naming: Alkanes

This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.