how to calculate the heat (kJ) released to thesurroundings when a 23.0 g of HCL if formed, from a CH4 + Cl2=CHCl3+3HCL

How you finna respond 6 years later, that just pissed me off

And yet no one has yet to find the damn answer 🤦🏽‍♀️

To calculate the heat released (in kJ) to the surroundings when 23.0 g of HCl is formed from the reaction CH4 + Cl2 → CHCl3 + 3HCl, we need to use the concept of reaction stoichiometry and enthalpy of formation.

Here are the step-by-step calculations:

1. Calculate the moles of HCl formed:
- Given: Mass of HCl = 23.0 g
- Determine the molar mass of HCl:
- Molar mass of H = 1.007 g/mol
- Molar mass of Cl = 35.453 g/mol
- Molar mass of HCl = 1.007 g/mol + 35.453 g/mol = 36.460 g/mol
- Calculate moles of HCl:
- Moles of HCl = Mass of HCl / Molar mass of HCl
= 23.0 g / 36.460 g/mol
≈ 0.6313 mol

2. Determine the stoichiometric ratio between HCl and CH4 (reaction coefficient):
- From the balanced chemical equation: CH4 + Cl2 → CHCl3 + 3HCl
- The stoichiometric coefficient of HCl is 3.

3. Calculate the heat released using the enthalpy of formation:
- Given: Enthalpy of formation (∆Hf) of CH4 = -74.6 kJ/mol
- The reaction releases heat, so the value is negative.
- Calculate the heat released for the formation of 0.6313 mol of HCl:
- Heat released = ∆Hf of HCl × Moles of HCl
= -74.6 kJ/mol × 0.6313 mol
≈ -47.07 kJ

Therefore, approximately -47.07 kJ of heat is released to the surroundings when 23.0 g of HCl is formed in the given reaction.

To calculate the heat released to the surroundings when 23.0 g of HCl is formed from the reaction CH4 + Cl2 = CHCl3 + 3HCl, you will need to use the concept of heat of reaction, also known as enthalpy change.

Here are the steps to calculate the heat released:

1. Determine the balanced chemical equation for the reaction:
CH4 + Cl2 = CHCl3 + 3HCl

2. Calculate the molar mass of HCl:
HCl has a molar mass of approximately 36.46 g/mol.

3. Convert the mass of HCl formed to moles:
Using the molar mass of HCl, we can convert 23.0 g of HCl to moles by dividing the mass by the molar mass:
moles of HCl = mass of HCl / molar mass of HCl

moles of HCl = 23.0 g / 36.46 g/mol

4. Determine the heat released per mole of HCl:
To calculate the heat released, you will need the heat of reaction (ΔH) per mole of HCl. This value can be found in reference sources or given in the problem statement. Let's assume the heat of reaction is -92.3 kJ/mol.

5. Calculate the heat released to the surroundings:
Multiply the moles of HCl calculated in step 3 by the heat of reaction per mole of HCl:
heat released = moles of HCl * ΔH

heat released = (23.0 g / 36.46 g/mol) * -92.3 kJ/mol

Now, plug in the values and calculate the heat released.

It's important to note that the negative sign in the heat of reaction indicates that the reaction is exothermic, meaning heat is released to the surroundings.