Answer:
2 Cu2O + C → 4 Cu + CO2
This is an oxidation-reduction (redox) reaction:
4 CuI + 4 e- → 4 Cu0 (reduction)
C0 - 4 e- → CIV (oxidation)
Cu2O is an oxidizing agent, C is a reducing agent.
Explanation:
?????
Mass of methane takne = 1.5g
moles of methane used = masss / molar mass = 1.5 / 16 = 0.094 moles
mass of water = 1000 g
Initial temperature of water = 25 C
final temperature = 37 C
specific heat of water = 4.184 J /g C
1) Heat absorbed by water = q =m• C• ΔT = 1000 X 4.184 x (37-25) = 50208 Joules
2) Heat absorbed by calorimeter = Heat capacity X ΔT = 695 X (37-25) = 8340 J
3) Total heat of combustion = heat absorbed by water + calorimeter = 50208 + 8340 = 58548 Joules
This heat is released by 0.094 moles of methane
So heat released by one mole of methane =
- 622851.06 Joules = 622.85 kJ / mole
4) standard enthalpy of combustion = -882 kJ / mole
Error = (882-622.85) X 100 / 882 = 24.84 %
The name is 2-Chloro Propane
Because the chlorine is linked to the second carbon atom when it is spread out
Answer:
2024.1g
Explanation:
Given parameters:
Number of moles of Na = 34.6moles
Unknown:
Mass of product formed = ?
Solution:
We must first establish the reaction equation as shown below;
2Na + Cl₂ → 2NaCl
We solve from the known to the unknown specie;
2 moles of Na produced 2 moles of NaCl
34.6moles of Na will produce 34.6moles of NaCl
Now to find the mass of NaCl;
mass = number of moles x molar mass = 34.6 x (23 + 35.5) = 2024.1g
Na2C03 10H2O is hydrated sodium carbonate salt or sodium carbonate with water of crystallisation.
<u>Explanation</u>:
- The water atoms which are a piece of the structure of a precious stone of salt are called Water of crystallization.
The regular name and synthetic equation of an industrially significant compound which has ten water particles is Sodium Carbonate [washing soda]
Na2CO3.10H2O
Preparation:
-
A cold and Concentrated Solution of Sodium chloride is responded with Ammonia and Carbon dioxide to get Sodium Hydrogen Carbonate.
NaCl +NH3 +H2O+CO2 - >NaHCO3 +NH4Cl
-
Sodium Hydrogenarbonate is isolated by filtration, dried and warmed. On warming, sodium hydrogen carbonate deteriorates to frame Sodium carbonate.
2NaHCO3 - > Na2CO3 + CO2 + H2O
-
Anhydrous sodium carbonate is broken down in water and to get 10 atoms of water of crystallization.
Na2CO3+10H2O - >Na2CO3.10H2O