I don't see any way to calculate concentration. You have grams and you can get mols, but mols/L = ?
rate = d(C2H2)/time.
rate = d(C2H2)/time.
Step 1: Calculate the number of moles of ethylene gas produced
To do this, we need to know the molar mass of ethylene gas. The molar mass of ethylene (C2H2) is:
2(atomic mass of Carbon) + 2(atomic 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
Now we can calculate the number of moles of ethylene gas produced:
moles of ethylene = mass of ethylene / molar mass of ethylene
= 14.2 g / 26.04 g/mol
= 0.545 mol
Step 2: Calculate the reaction rate
The reaction rate is given by the equation:
reaction rate = moles of ethylene gas / time
In this case, the moles of ethylene gas produced is 0.545 mol, and the time is 4.00 seconds. Therefore, we can calculate the reaction rate as follows:
reaction rate = 0.545 mol / 4.00 s
= 0.136 mol/s
So, the reaction rate is 0.136 mol/s.