acetylene gas is produced by adding water to calcium carbide as follows;
CaC2 + H2O ---> C2H2 + Ca(OH)2. how many gram of acetylene are produced by adding water to CaC2
To determine the number of grams of acetylene produced by adding water to calcium carbide (CaC2), you need to consider the stoichiometry of the reaction. The stoichiometric ratio between the reactants (CaC2 and H2O) and the product (C2H2) is required to calculate the number of grams of acetylene produced.
First, you need to find the molar mass of acetylene (C2H2). The molar mass of carbon (C) is approximately 12.01 g/mol, and the molar mass of hydrogen (H) is approximately 1.01 g/mol. Since acetylene consists of two carbon atoms and two hydrogen atoms, the molar mass of acetylene is:
Molar mass of acetylene (C2H2) = (2 * molar mass of carbon) + (2 * molar mass of hydrogen)
= (2 * 12.01 g/mol) + (2 * 1.01 g/mol)
= 24.02 g/mol + 2.02 g/mol
= 26.04 g/mol
Next, you need to determine the stoichiometric ratio of calcium carbide (CaC2), water (H2O), and acetylene (C2H2) based on the balanced chemical equation:
CaC2 + H2O → C2H2 + Ca(OH)2
According to the balanced equation, 1 mole of CaC2 reacts with 1 mole of H2O to produce 1 mole of C2H2.
Now, let's assume you have a certain mass of CaC2. To calculate the mass of acetylene produced, you need to follow these steps:
Step 1: Convert the given mass of CaC2 to moles.
Mass (g) of CaC2 → Moles of CaC2
Divide the given mass (g) of CaC2 by the molar mass of CaC2 to obtain moles.
Step 2: Use the stoichiometric ratio to determine the moles of C2H2.
Moles of CaC2 → Moles of C2H2
Since the stoichiometric ratio is 1:1 between CaC2 and C2H2, the moles of CaC2 and C2H2 will be equal.
Step 3: Convert the moles of C2H2 to grams.
Moles of C2H2 → Mass (g) of C2H2
Multiply the moles of C2H2 by the molar mass of C2H2 to obtain the mass in grams.
By following these steps, you can calculate the exact amount of acetylene produced in grams by adding water to a given mass of calcium carbide (CaC2).