Practical Chemistry by Subhoshree Chatterjee https://padlet.com/subhoshree15/PC19D Part-1 en-us 2021-01-15 04:19:24 UTC 2021-01-27 03:21:08 UTC hello@padlet.com https://padlet.com/subhoshree15/PC19D/wish/1090018742 Hydrogen
liberated by action of active metals like magnesium and zinc with dilute hydrochloric acid or dilute sulphuric acid.]]> 2021-01-15 05:05:23 UTC https://padlet.com/subhoshree15/PC19D/wish/1090018742 https://padlet.com/subhoshree15/PC19D/wish/1090019099 oxygen
liberated on heating-1) metal nitrates line Pb(NO3)2  2)metal oxides like HgO,PbO2 3)oxysalts lilke potassium chlorate,dichromate.permanganate etc.]]> 2021-01-15 05:05:44 UTC https://padlet.com/subhoshree15/PC19D/wish/1090019099 https://padlet.com/subhoshree15/PC19D/wish/1090019401 Water vapour
it is liberated by heating 
a)hydrated salts like copper sulphate pentahydrate 
b)metal hydroxides except NaOH and KOH 
c)metal hydrogen carbonates or metal hydrogen sulphites]]> 2021-01-15 05:06:07 UTC https://padlet.com/subhoshree15/PC19D/wish/1090019401 Hydrogen Jai_Rudraraju https://padlet.com/subhoshree15/PC19D/wish/1090019915 Formula-H2
Nature: Neutral
Colour: Colourlesss
Odour: Odourless
test : a burning wooden splinter is brought near it, it goes off and gas burns with pale blue fame producing pop sound]]> 2021-01-15 05:06:39 UTC https://padlet.com/subhoshree15/PC19D/wish/1090019915 https://padlet.com/subhoshree15/PC19D/wish/1090020455 Carbon dioxide (CO2)
Colourless and odourless gas. Turns moist blue litmus faint red. When the gas is passed through lime water,it turns milky due to the formation of white precipitate of calcium carbonate. ]]> 2021-01-15 05:07:10 UTC https://padlet.com/subhoshree15/PC19D/wish/1090020455 Oxygen Jai_Rudraraju https://padlet.com/subhoshree15/PC19D/wish/1090020658 Formula-O2
Nature-neutral
colour-colourless
test : rekindles a glowing splinter
]]> 2021-01-15 05:07:21 UTC https://padlet.com/subhoshree15/PC19D/wish/1090020658 Chlorine gayatrivaitla https://padlet.com/subhoshree15/PC19D/wish/1090023858 Formula: Cl2
- It is a greenish yellow gas having a pungent irritating smell.
-  It turns most blue litmus paper red then bleaches it.
- It turns moist starch iodide paper blue black.]]> 2021-01-15 05:10:49 UTC https://padlet.com/subhoshree15/PC19D/wish/1090023858 Sulphur Dioxide lordzynox15 https://padlet.com/subhoshree15/PC19D/wish/1090024208 Nature: Acidic
Color: Colourless
Formula: SO2
Odour: Pungent smell
It changes orange/yellow solution of acidified potassium dichromate green.

]]> 2021-01-15 05:11:13 UTC https://padlet.com/subhoshree15/PC19D/wish/1090024208 hydrogen sulphide: https://padlet.com/subhoshree15/PC19D/wish/1090024251 H2S
H2S has a foul rotten odor smelling like rotten eggs
it is poisounous corrosive and flamable
confirmatiory test: an iron is made to react with H2S if the compound is found to have less bacteria H2S is presence is confirmed.]]> 2021-01-15 05:11:16 UTC https://padlet.com/subhoshree15/PC19D/wish/1090024251 Hydrogen chloride https://padlet.com/subhoshree15/PC19D/wish/1090024478 formula=HCl
nature=acidic
colour=colourless
odour=odourless
When the gas is passed through silver nitrate solution,a white precipitqte of silver chloride is formed.]]> 2021-01-15 05:11:32 UTC https://padlet.com/subhoshree15/PC19D/wish/1090024478 https://padlet.com/subhoshree15/PC19D/wish/1090025282 Carbon dioxide 
Heat metallic carbonate(except sodium carbonate and potassium carbonate) or add dilute acid to any carbonate or hydrogen carbonate.]]> 2021-01-15 05:12:22 UTC https://padlet.com/subhoshree15/PC19D/wish/1090025282 Hydrogen Chloride https://padlet.com/subhoshree15/PC19D/wish/1090025368 Liberated when a metal chloride or ammonium chloride is boiled with conc. sulphuric acid]]> 2021-01-15 05:12:27 UTC https://padlet.com/subhoshree15/PC19D/wish/1090025368 Sulphur Dioxide lordzynox15 https://padlet.com/subhoshree15/PC19D/wish/1090025953 Methods of preparation:
a)  by heating metal sulphites except Na2SO3 and K2SO3.
b)  by heating metal hydrogen sulphites.
c)  by the action of metal sulphites or metal hydrogen sulphites with dil. HCl or dil. H2SO4.

]]> 2021-01-15 05:13:00 UTC https://padlet.com/subhoshree15/PC19D/wish/1090025953 Chlorine gayatrivaitla https://padlet.com/subhoshree15/PC19D/wish/1090027366 It is liberated:
- by heating MnO2,PbO2,Pb3O4,KMnO4 or K2CRr2O7 with conc. HCl.
- by the action of bleaching powder with dil. HCl or dil.H2SO4.]]> 2021-01-15 05:14:31 UTC https://padlet.com/subhoshree15/PC19D/wish/1090027366 Nitrogen dioxide Jai_Rudraraju https://padlet.com/subhoshree15/PC19D/wish/1090028993 Formula- NO2
Nature- acidic
Colour- brown
Odour- irritating
Confirmatory test- it liberates violet vapours (iodine vapour) from potassium iodide solution.]]> 2021-01-15 05:16:11 UTC https://padlet.com/subhoshree15/PC19D/wish/1090028993 Question 1 https://padlet.com/subhoshree15/PC19D/wish/1090031126 a)sulphur di oxide
acidic potassium dichromate solution turns orange to green

b) The gas is basic in nature.
    Ammonia

c) Name of Gas C is Hydrogen Chloride.
The product obtained is Ammonium Chloride (NH4Cl).
Type of reaction: Combination, Neutralization, Exothermic.

d) The gas is acidic in nature
The given gas is chlorine(Cl2).



]]> 2021-01-15 05:18:40 UTC https://padlet.com/subhoshree15/PC19D/wish/1090031126 preparation for H2S https://padlet.com/subhoshree15/PC19D/wish/1090032987 -heating of thioacetamide forms H2S.
- It is liberated by the action of dil. HCl or dil. H2SO4 on metal sulfides.]]> 2021-01-15 05:21:01 UTC https://padlet.com/subhoshree15/PC19D/wish/1090032987 Nitrogen dioxide lordzynox15 https://padlet.com/subhoshree15/PC19D/wish/1090033973 Preparation- produced on heating a heavy metal nitrate such as copper nitrate.
It is liberated by- 
(a) by heating metal nitrates. (except NaNO3 and KNO3)
(b) by heating metal nitrates with conc. H2SO4.]]> 2021-01-15 05:22:18 UTC https://padlet.com/subhoshree15/PC19D/wish/1090033973 Question 2 Jai_Rudraraju https://padlet.com/subhoshree15/PC19D/wish/1090037871 a) Nitrogen Dioxide
b) Sulphur Dioxide
c) Oxygen]]> 2021-01-15 05:27:03 UTC https://padlet.com/subhoshree15/PC19D/wish/1090037871 Water (H2O) lordzynox15 https://padlet.com/subhoshree15/PC19D/wish/1090039298 Formula: H2O
Nature: Neutral
Colour: Colourless
Test: It turns white anhydrous copper sulphate blue.]]> 2021-01-15 05:28:50 UTC https://padlet.com/subhoshree15/PC19D/wish/1090039298 Question 3 Jai_Rudraraju https://padlet.com/subhoshree15/PC19D/wish/1090040278 a) Hydrogen Sulphide. It turns lead acetate paper black.
b) Zinc sulphide and dilute hydrochloric acid]]> 2021-01-15 05:30:11 UTC https://padlet.com/subhoshree15/PC19D/wish/1090040278 Other Gases lordzynox15 https://padlet.com/subhoshree15/PC19D/wish/1129740043 Helium
Neon
Argon 
Krypton
Xenon
Radon
Carbon Monoxide
Nitric Oxide]]> 2021-01-27 03:20:07 UTC https://padlet.com/subhoshree15/PC19D/wish/1129740043