Example:7
Calculate the vapor density and molecular weight of CO 2 gas occupying 200 mL and weighing 0.40 g at ST..
Step 7
The molecular mass (or molar mass) is obtained either from the experimental data or from the vapor density of the compound by using the relationship, Molecular mass = 2 x Vapor dens..
7. Color
All the halogens are colored. The color of different halogens are given below: Halogen Fluorine Chlorine Bromine Iodine Colour Light yellow Greenish yellow Reddish brown Dark violet Explanation: The color of halogens is due to the fact that their molecules absorb radiations from..
7 a) In medicine
A mixture of 97% oxygen and 3% carbon dioxide, called carbogen is used to revive persons affected by carbon monoxide poisoning, pneumonia, asphyxiation etc. b) Over production of hydrochloric acid in the gastric juice causes acidity. Health salts mostly contain sodium hydrogen carbonate, which rea..
Molecule of Nitrogen (N = 7)
An example of sharing of three pairs of electrons (Triple bond) Two atoms of nitrogen share three pairs of electrons to form one molecule of nitrogen (Fig. 3.6). Note : ..
An example of sharing of three pairs of electrons (Triple bond) Two atoms of nitrogen share three pairs of electrons to form one molecule of nitrogen (Fig. 3.6). Note : ..Fig: 7.3 - Decomposition of calcium carbonate
Similarly, when hydrogen gas and iodine vapours are heated in a closed vessel at a constant temperature, 717K, the two react to form hydrogen iodide. In the beginning, the colour of the reaction mixture is deep violet due to the presence of iodine. But as the reaction proceeds, the intensity of th..
Similarly, when hydrogen gas and iodine vapours are heated in a closed vessel at a constant temperature, 717K, the two react to form hydrogen iodide. In the beginning, the colour of the reaction mixture is deep violet due to the presence of iodine. But as the reaction proceeds, the intensity of th..Fig: 7.2 - Dynamic nature of solid in liquid equilibrium
The measurable/visible properties of the system must remain unchanged with time. Once, an equilibrium is reached the properties of the system do not change with time. When equilibrium is attained, there exists an expression of concentrations of the substances involved in equilibrium, which bec..
The measurable/visible properties of the system must remain unchanged with time. Once, an equilibrium is reached the properties of the system do not change with time. When equilibrium is attained, there exists an expression of concentrations of the substances involved in equilibrium, which bec..K2Cr2O7 (Potassium dichromate)
K 2 Cr 2 O 7 (Potassium dichromate) - It is prepared from chromite ore (FeCr 2 O 4 ). This preparation involves many ste..
With acidified KMnO4 Or K2Cr2O7
Acidified potassium permanganate (or potassium dichromate) oxidises the dihydroxy compound so produced in reaction to ketone and/or carboxylic acid. For example, ..
Acidified potassium permanganate (or potassium dichromate) oxidises the dihydroxy compound so produced in reaction to ketone and/or carboxylic acid. For example, ..See what our Users say :
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