If 15g of potassium trioxochlorate(v) is heated in the presence of Mno2. what is the mass of chloride produce
Potassium trioxochlorate (V) is another name for KClO3. The balanced reaction is
2KClO3(s) + heat �¨ 2KCl(s) + 3O2(g)
------------ (MnO2 catalyst)
15 g of KClO3 is 15g/122.6 g/mol = 0.1224 mol KClO3. You will make the same number of moles of KCl. Multiply that by the molar mass of KCl (74.6 g/mol) for the answer.
I get 9.13 moles
Hope this helped :)
15g of KCLO3
Molar mass of KCLO3 = 122.55g/mol~122.6g/mol
Number of moles= mass/molar mass
=15/122.6 = 0.1223mol
Multiply by the molar mass of KCL = 74.55~74.6
74.6×0.1223= 9.12g
Your mistakes were in the calculation of 15/122.6 and the unit of your final answer which is supposed to be in grams
I.e g/mol ×mol
To determine the mass of chloride produced when 15g of potassium trioxochlorate(V) is heated in the presence of MnO2, we need to first understand the chemical reaction involved.
The chemical equation for the reaction between potassium trioxochlorate(V) (KClO3) and MnO2 can be represented as follows:
2KClO3 + MnO2 → K2MnO4 + Cl2 + O2
From the balanced chemical equation, we can see that for every 2 moles of KClO3, 2 moles of K2MnO4, 1 mole of Cl2, and 3 moles of O2 are produced.
1 mole of chlorine gas (Cl2) has a molar mass of approximately 70.90 g/mol. Therefore, to calculate the mass of chloride produced, we need to determine the number of moles of KClO3 in 15g and then convert it to moles of Cl2, and finally, convert to grams.
Here's the step-by-step process:
1. Calculate the molar mass of KClO3:
- K: 39.10 g/mol
- Cl: 35.45 g/mol
- O: 16.00 g/mol (3 atoms)
Molar mass of KClO3 = (39.10 g/mol) + (35.45 g/mol) + (16.00 g/mol x 3)
= 122.55 g/mol
2. Calculate the number of moles of KClO3 in 15g:
Moles = Mass / Molar Mass
Moles of KClO3 = 15g / 122.55 g/mol
3. Calculate the number of moles of Cl2 produced:
From the balanced equation, we know that for every 2 moles of KClO3, 1 mole of Cl2 is produced.
Moles of Cl2 = Moles of KClO3 * (1 mole Cl2 / 2 moles KClO3)
4. Calculate the mass of chloride produced:
Mass = Moles * Molar Mass
Mass of chloride = Moles of Cl2 * Molar mass of Cl2
By following this process, you can now calculate the mass of chloride produced when 15g of potassium trioxochlorate(V) is heated in the presence of MnO2.