Advertisements
Advertisements
प्रश्न
Given that the relative molecular mass of copper oxide is 80, what volume of ammonia (measured at STP) is required to completely reduce 120g of copper oxide? The equation for the reaction is :
3CuO + 2NH3 → 3Cu + 3H2O + N2
Advertisements
उत्तर
3CuO + 2NH3 → 3Cu + 3H2O + N2
Molecular mass of CuO = 80
Volume occupied by 1 mole of NH3 = 22.4L
From the equation :
3 moles of CuO is reduced by 2 moles of ammonia
For 240g of CuO, volume of NH3 consumed = 44.8L
For 120g of CuO, volume of NH3 consumed
= 44.8 x 120 / 240 = 22.4 L
APPEARS IN
संबंधित प्रश्न
What is the mass of 0.2 mole of oxygen atoms?
Calculate the percentage of water of crystallization in CuSO4.5H2O
(H = 1, O = 16, S = 32, Cu = 64)
Calculate the number of moles in 12g of oxygen gas.
Two oxides of a metal (M) have 20.12% and 11.19% oxygen. The formula of the first oxide is MO. Determine the formula of the second oxide.
Define the term:
Relative molecular mass
Define the term:
Gram atom
Find the number of molecules in 3.2 g of SO2.
If phosphorus is considered to contain P4 molecules, then calculate the number of moles in 100g of phosphorus?
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol–1.
Fill in the missing data in the Table
| Species Property | H2O | CO2 | Na atom | MgCl2 |
| No. of moles | 2 | - | - | 0.5 |
| No. of particles | - | 3.011×1023 | - | - |
| Mass | 36g | - | 115 g | - |
