Right now I plan on doing this. 2 plastic buckets each with 1000ml of hydrochloric acid at 30%. Then the 2 buckets will be in a small car. I will mix 1000grams of sodium sulfide flakes into each bucket and quickly stir them. Can a chemist here tell me the ppm of hydrogen sulfide this would produce? According to chat gpt it would turn the car into 75300ppm. Obviously this isn't good as it would be SERIOUSLY overkill and injur anyone nearby. Can someone with good chemistry knowledge give me an accurate estimate
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RadiantNumber
Experienced
- Mar 2, 2024
- 274
I am not chemist but I don't think it would be safe, you could burn yourself with acid
I heard there are easier methods without acid but I am not chemist as I said
I heard there are easier methods without acid but I am not chemist as I said
Yea I don't think I would burn myself with acid. I'm not claiming to be "that guy" or anything, but I bet I could mix a liquid without it touching my skin lol
RadiantNumber
Experienced
- Mar 2, 2024
- 274
I am not a chemist, but I have studied chemistry in the past.
We have 2 liters of aqueous HCl solution and 2000 g of Na2S. We also have a car with an unknown volume of air. Google estimates that, on average, a compact car will have about 3000 liters of air.
The mass of a 30% HCl solution will be equal to the volume multiplied by the density = 2 L × 1150 g/L = 2300 g. The mass of HCl in this solution will be equal to 2300 g × 0.3 = 690 g. The molar mass of HCl = 36.5 g/mol, so we have 690 g ÷ 36.5 g/mol = 18.9 mol HCl.
The molar mass of Na2S is 78 g/mol, so we have 2000 g ÷ 78 g/mol = 25.6 mol Na2S.
Reaction formula:
2HCl + Na2S --> H2S + 2NaCl
There is a shortage of HCl, so we will calculate based on that.
2HCl (18.9 mol) + Na2S (9.45 mol) --> H2S (9.45 mol) + 2NaCl (18.9 mol)
During the reaction, 9.45 mol of H2S will be released. At room temperature and a pressure of 1 bar, this will give us 9.45 mol × 24.8 L/mol = 234.36 L of H2S. The volume fraction of H2S will be equal to 234.36 L ÷ (234.36 L + 3000 L) = 0.072459 = 7.2459% = 72459 ppm.
It's also worth noting that this is an exothermic reaction with a significant gas release. If you simply add sodium sulfide to the acid, you risk creating a volcano of hot acid solution. As far as I know, the acid is added to the reactants, not vice versa.
We have 2 liters of aqueous HCl solution and 2000 g of Na2S. We also have a car with an unknown volume of air. Google estimates that, on average, a compact car will have about 3000 liters of air.
The mass of a 30% HCl solution will be equal to the volume multiplied by the density = 2 L × 1150 g/L = 2300 g. The mass of HCl in this solution will be equal to 2300 g × 0.3 = 690 g. The molar mass of HCl = 36.5 g/mol, so we have 690 g ÷ 36.5 g/mol = 18.9 mol HCl.
The molar mass of Na2S is 78 g/mol, so we have 2000 g ÷ 78 g/mol = 25.6 mol Na2S.
Reaction formula:
2HCl + Na2S --> H2S + 2NaCl
There is a shortage of HCl, so we will calculate based on that.
2HCl (18.9 mol) + Na2S (9.45 mol) --> H2S (9.45 mol) + 2NaCl (18.9 mol)
During the reaction, 9.45 mol of H2S will be released. At room temperature and a pressure of 1 bar, this will give us 9.45 mol × 24.8 L/mol = 234.36 L of H2S. The volume fraction of H2S will be equal to 234.36 L ÷ (234.36 L + 3000 L) = 0.072459 = 7.2459% = 72459 ppm.
It's also worth noting that this is an exothermic reaction with a significant gas release. If you simply add sodium sulfide to the acid, you risk creating a volcano of hot acid solution. As far as I know, the acid is added to the reactants, not vice versa.
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