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
Calculate the molar mass of the following substance:
Ethyne, C2H2
Choose the correct answer from the options given below:
The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:
[Given that H = 1, O = 16]
The percentage composition of a gas is Nitrogen 82.35%, Hydrogen 17.64%. Find the empirical formula of the gas. [N = 14, H = 1]
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
Fill in the blank
One gram atom of an element contains ______ atoms.
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
Calculate the number of atoms in the following:
52 amu of He
Calculate the number of moles in 7g of nitrogen.
One mole of any gas occupies ______ ml at S.T.P.
How many grams are there in the following?
3 moles of chlorine molecule, Cl2.
