Advertisements
Advertisements
Question
What do you understand by the statement that ‘vapour density of carbon dioxide is 22’?
Advertisements
Solution
The vapor density of carbon dioxide is 22; it means that 1 molecule of carbon dioxide is 22 times heavier than 1 molecule of hydrogen.
APPEARS IN
RELATED QUESTIONS
The usefulness of a fertilizer depends upon percentage of nitrogen present in it. Find which of the following is a better fertilizer:
(a) Ammonium nitrate [NH4NO3]
(b) Ammonium phosphate [(NH4)3PO4 (N=14,H=1,O=16,P=31)
What weight of sulphuric acid will be required to dissolve 3g of magnesium carbonate?
[Mg = 24, C =12, 0 = 16 ]
MgCO3 + H2SO4 → MgSO4 + H2O+ CO2
Calculate the percentage of water in ferrous sulphate crystals.
[Fe = 56, S = 32, O =16, H = 1].
If the relative molecular mass of A is 90, what is the molecular formula of A?
Concentrated nitric acid oxidises phosphorus to phosphoric acid according to the following equation:
\[\ce{P + 5HNO3 -> H3PO4 + H2O + 5NO2}\]
- What mass of phosphoric acid can be prepared from 6.2 g of phosphorus?
- What mass of nitric acid will be consumed at the same time?
- What will be the volume of steam at the same time measured at 760 mm Hg pressure and 373°C?
(H = 1; N = 14; O = 16; P = 31∴ )
The reaction of potassium permanganate (VII) with acidified iron (II) sulphate is given below:
2KMno4 + 10FeSO4 + 8H2O → K2SO4 + 2MnSO4 + 5Fe2(SO4)3 + 8H2O
If 15.8g of potassium permanganate (VII) was used in the reaction, calculate the mass of iron (II) sulphate used in the above reaction.
Give one word or phrase for the following:
Formation of ions from molecules.
Calculate the relative molecular mass of:
Ammonium chloroplatinate (NH4)2 PtCl6
If a crop of wheat removes 20 kg of nitrogen per hectare of soil, what mass of the fertilizer, calcium nitrate Ca(NO3)2 would be required to replace the nitrogen in a 10 hectare field?
The vapour density of CH3OH is ______. (At. Wt. C = 12, H = 1, O = 16)
