Now let's see how to make 1 N and 1M H2SO4 from 98% concentrated H2SO4 . This calculation varies with concentration of H2SO4. Because density varies with concentration of H2SO4 . Now we are having density 1.84 for 98% concentrated H2SO4. If you are going to use less concentrated H2SO4 then first find out density of it then put that value in below formula instead of 1.84 H2SO4 is liquid, so at first we need to convert H2SO4 molecular weight (gm) into volume (ml) let's use formula density = mass / volume volume = mass of HCl / density 98.08 / 1.84 V = 53.30 ml Here we are making 1M and 1N H2SO4 from 98% concentrated H2SO4. If you are going to use less concentrated H2SO4 then use that percentage value in below formula rather than 98%. Let's use formula 1M H2SO4 (98%) = 53.30 ml [ V ] 100% ...
Air is the composition of different type of gasses.
Let's see percentage of that gasses in the air.
1) Nitrogen = 78.09%
2) Oxygen = 20.95%
3) Argon = 0.93%
4) Carbon dioxide= 0.039%
5) Neon = 0.001818%
6) Helium = 0.000524%
7) Methane = 0.000179%
Oxygen gas always present in air in molecular form.
Everybody has seen at least one time, balloons always go upward direction in air.
Do you know this is why, because balloons
filled up helium gas which is very light weight gas.
Methane gas is responsible for green house effect because methane absorbs 20% more heat than carbon dioxide.
Combination of carbon dioxide and drinking water is called drinking soda.
Ammonia is not burn able. In the factories
of ice they use ammonia as refrigerator for the formation of ice. Ammonia is very usefull in
the formation of urea.
Liquid sulphur dioxide is very usefull in the of petroleum purification. In sugar industries and artificial yarn industries sulphur dioxide use as unproliferous. It is also usefull in the formation of sulphuric acid as well as in the refrigerator's. Sulphur dioxide is toxic and colorless gas. It is use as preservatives for dry foods.
H2s is colorless gas and it has smell like rotten egg
H2s create blue flames when it burns in air.
It is very usefull in laboratory for identification of positive metal ions.
In chlorination process chlorine react with water and create nascent oxygen. That oxygen has intense oxidation properties.that
property is responsible for the killing microorganism which are present in water.
When yellow phosphorous react with sodium or potassium hydroxide it create phosphin gas(ph3).
If we put yellow phosphorus in water it will create cold flame after heating water. Yellow phosphorus has smell like garlic. Yellow phosphorus can burn at room temperature that is why it keep in water always.
Nitrogen, phosphorus, potassium means (NPK) are essential nutrients for plants.
Chlorination is very usefull process In urban areas for purification of water.chlorine has green colour. It is very toxic. In first world war chlorine was used as weapon.
Some important uses of gasses.
Nitrogen = it is usefull in the formation of important nutrients for all living things. for the formation of ammonia. As preservatives for food.
Oxygen = for respiration and for burning.
Carbon dioxide =for the formation of food in plants. It is very usefull to stop burning that is why it is usefull for fire brigade.
Argon = in light bulbs
Helium = it is very usefull in aeroplanes that
fly without fans. To get low temperature.
Neon= it is usefull in road lamps.
Xenon = usefull in flash photography.
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