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
Give balanced chemical equations for the following conversions A, B, and C:
Aluminum carbide reacts with water according to the following equation:
\[\ce{Al4C3 + 12H2O -> 4Al(OH)3 + 3CH4}\]
- What mass of aluminum hydroxide is formed from 12g of aluminum carbide?
- What volume of methane at s.t.p. is obtained from 12g of aluminum carbide?
What is the mass of nitrogen in 1000Kg of urea [CO(NH2)2] ?
[H = 1, C= 12, N= 14, O = 16]
Concentrated nitric acid oxidizes phosphorous to phosphoric acid according to the following equation :
P + 5HNO3 → H3PO4 + H2O + 5NO2
What mass of nitric acid will be consumed at the same time?
When heated, potassium permanganate decomposes according to the following equation:
\[\ce{2KMnO4 -> \underset{solid residue}{K2MnO4 + MnO2} + O2}\]
Some potassium permanganate was heated in test tube. After collecting one litre of oxygen at room temperature, it was found that the test tube had undergone a loss in mass of 1.32 g. If one litre of hydrogen under the same conditions of temperature and pressure has a mass of 0.0825 g, calculate the relative molecular mass of oxygen.
A compound 'X' consists of 4.8% of C and 95.2% of Br by mass.
If the vapour density of the compound is 252, what is the molecular formula of the compound?
4.5 moles of calcium carbonate are reacted with dilute hydrochloric acid.
- Write the equation for the reaction.
- What is the mass of 4.5 moles of calcium carbonate? (Relative molecular mass of calcium carbonate is 100).
- What is the volume of carbon dioxide liberated at STP?
- What mass of calcium chloride is formed? (Relative molecular mass of calcium chloride is 111).
- How many moles of HCl are used in this reaction?
Calculate the volume of oxygen required for the complete combustion of 8.8 g of propane (C3H5).
(Atomic mass: C = 14, O = 16, H = 1, Molar Volume = 22.4 dm3 at STP.)
Calculate the relative molecular mass of:
(NH4)2 Cr2O7
The atomic mass of Chlorine is 35.5. What is its vapour density?
