https://padlet.com/subhoshree15/P19C Part-1 en-us 2021-01-19 03:24:41 UTC 2021-01-19 15:37:17 UTC hello@padlet.com daiwik0106 https://padlet.com/subhoshree15/P19C/wish/1099525860 . Colourless
. Odourless
. Tastless 
. It is neutral towards moist litmus paper
. A glowing splinter starts to burn in prescence of oxygen.]]> 2021-01-19 03:44:30 UTC https://padlet.com/subhoshree15/P19C/wish/1099525860 https://padlet.com/subhoshree15/P19C/wish/1099526940 Heat heavy metallic gases
(on heat)
Heavy metallic oxide -----> Metal oxide/ metal]]> 2021-01-19 03:45:20 UTC https://padlet.com/subhoshree15/P19C/wish/1099526940 daiwik0106 https://padlet.com/subhoshree15/P19C/wish/1099528175 . Colourless
. Orourless
. Tasteless gas
. Neutral towards moist litmus paper
. A burning splinter is brought near it, it burns with a pale blue flame and a pop sound is heard.]]> 2021-01-19 03:46:17 UTC https://padlet.com/subhoshree15/P19C/wish/1099528175 ojasgee https://padlet.com/subhoshree15/P19C/wish/1099528817 - colorless
- odorless
- It turns lime water milky and has no effect on potassium dichromate(acidified)
- acidic in nature]]> 2021-01-19 03:46:50 UTC https://padlet.com/subhoshree15/P19C/wish/1099528817 https://padlet.com/subhoshree15/P19C/wish/1099529498 It is colourless gas and it has a smell of rotten eggs
It is an acidic gas.
It turns moist lead acetate paper black.]]> 2021-01-19 03:47:24 UTC https://padlet.com/subhoshree15/P19C/wish/1099529498 https://padlet.com/subhoshree15/P19C/wish/1099532025 - Colourless 
- Odourless 
- Neutral towards litmus. 
- Turns blue cobalt chloride paper pink. 
- Turns white anhydrous copper sulphate blue. ]]> 2021-01-19 03:49:37 UTC https://padlet.com/subhoshree15/P19C/wish/1099532025 https://padlet.com/subhoshree15/P19C/wish/1099533234 Add dilute HCl or dilute H2SO4 to reactive metals  like magnesium, zinc, iron etc.( metals above hydrogen in reactivity series.
( on heat)
Active metal+dil acid -------> salt + hydrogen]]> 2021-01-19 03:50:35 UTC https://padlet.com/subhoshree15/P19C/wish/1099533234 https://padlet.com/subhoshree15/P19C/wish/1099536809 - Colourless
- Odourless 

]]> 2021-01-19 03:53:35 UTC https://padlet.com/subhoshree15/P19C/wish/1099536809 https://padlet.com/subhoshree15/P19C/wish/1099536945 It is a reddish brown gas and it has a pungent and a irritating smell.
It is an acidic gas.
It turns moist potttasium iodide paper brown.]]> 2021-01-19 03:53:44 UTC https://padlet.com/subhoshree15/P19C/wish/1099536945 rishinair2049 https://padlet.com/subhoshree15/P19C/wish/1099537995 Add dil. acid to any carbonate 
CaCO3 + HCl ——> CaCl2 + H20 + CO2 (laboratory preparation)
Heating of metallic carbonates:
CuCO3 ——> CuO + CO2]]> 2021-01-19 03:54:39 UTC https://padlet.com/subhoshree15/P19C/wish/1099537995 https://padlet.com/subhoshree15/P19C/wish/1099539824 Heat a crystalline substance like hydrated sodium like hydrated sodium carbonate.
(on heat)
Hydrated salt --------> Anhydrous salt+ water vapour]]> 2021-01-19 03:56:09 UTC https://padlet.com/subhoshree15/P19C/wish/1099539824 rishinair2049 https://padlet.com/subhoshree15/P19C/wish/1099540369 Add dil. HCl do dil. H2SO4 to metallic sulphides 
FeS + H2SO4 ——> FeSO4 + H2S]]> 2021-01-19 03:56:30 UTC https://padlet.com/subhoshree15/P19C/wish/1099540369 ojasgee https://padlet.com/subhoshree15/P19C/wish/1099542030 - colorless
- very little smell of burnt Sulphur 
- Acidic in nature
- It turns acidified potassium dichromate green. ]]> 2021-01-19 03:57:38 UTC https://padlet.com/subhoshree15/P19C/wish/1099542030 daiwik0106 https://padlet.com/subhoshree15/P19C/wish/1099542320 . Nitric oxide (N2O)
. Nitrous oxide (NO2)]]> 2021-01-19 03:57:53 UTC https://padlet.com/subhoshree15/P19C/wish/1099542320 rishinair2049 https://padlet.com/subhoshree15/P19C/wish/1099542967 Heat a heavy metal nitrate
2Cu(NO3)2 + heat ——> 2CuO + O2 + 4NO2]]> 2021-01-19 03:58:25 UTC https://padlet.com/subhoshree15/P19C/wish/1099542967 https://padlet.com/subhoshree15/P19C/wish/1099544075 heating an aqueous solution of ammonium chloride and sodium nitrite.

ammonium dichromate -------> water+ chromium (III)oxide + nitrogen]]> 2021-01-19 03:59:19 UTC https://padlet.com/subhoshree15/P19C/wish/1099544075 rishinair2049 https://padlet.com/subhoshree15/P19C/wish/1099545133 Add dil. HCl or dil. H2SO4 to metallic sulphites
Na2SO3 + 2HCl ——> 2NaCl + H2O + SO2]]> 2021-01-19 04:00:12 UTC https://padlet.com/subhoshree15/P19C/wish/1099545133 https://padlet.com/subhoshree15/P19C/wish/1099556287 a)Nitrogen dioxide
b)sulphur dioxide
c)oxygen]]> 2021-01-19 04:08:43 UTC https://padlet.com/subhoshree15/P19C/wish/1099556287 ojasgee https://padlet.com/subhoshree15/P19C/wish/1099557053  i) the gas in setup A is basic in nature. The gas in srt up B in acidic in nature.
  ii) The deposit x seen is
  iii) The gas released is Carbon Dioxide.
   iv) We can confirm that the gas evolved in setup B is Carbon Dioxide as it does not have any effect acidified potassium dichromate.
v) The deposit in C is Copper Sulphate as it is a blue hydrous salt.
vi) Deposit Y is Copper sulphate.If the gas produced turns moist cobalt chloride paper pink then it is water vapour thus the copper sulphate is formed.And when water is added to copper sulphate, if it turns blue it is copper sulphate
vii)When the sample D is heated for a long time then the solid iodine would change into iodine gas which is violet in colour.Thus we can tell that the substance in sample D which is iodine is easily sublimable.
viii)The residue formed is PbO which is reddish brown when hot and is yellow on cold.It also sticks to the sides of the test tube due to which it is very difficult to remove the residue.
(ix) This gas is NO2 / Nitrogen dioxide. It turns moist potassium iodide paper brown. 
(x) The other gas released in the Setup E is Oxygen. A glowing splinter starts to burn in the presence of this gas.
(xi) .A: NH4Cl ---> NH3 + HCl
B: CuCO3 ---> CuO + CO2 
C: CuSO4.5H2O ---> CuSO4 + 5 H2O 
D: I2 ---> I 2
E:  Pb(NO3)2 ---> 2 PbO + 4 NO2 + O2
(xii) Thermal Decompostition:
B, C, E ( As one reactant gives multiple products on heating.)

Thermal Dissociation:
A ( As it is a reversable thermal decomposition reaction )

None: 
D ( As there is only 1 reactant and 1 product )]]> 2021-01-19 04:09:18 UTC https://padlet.com/subhoshree15/P19C/wish/1099557053 https://padlet.com/subhoshree15/P19C/wish/1099557726 a. The gas is hydrogen sulphide(H2S). Moist lead acetate paper turns silvery grey when exposed to H2S.
b. Sulphur and hydrogen]]> 2021-01-19 04:09:45 UTC https://padlet.com/subhoshree15/P19C/wish/1099557726 rishinair2049 https://padlet.com/subhoshree15/P19C/wish/1099570996 A. Sulphur dioxide
    The solution turns from orange to green 
B. The gas B is basic
    Ammonia
C. Hydrogen chloride
   Ammonium chloride
   Neutralisation reaction
D. It is acidic in nature
    Chlorine]]> 2021-01-19 04:19:04 UTC https://padlet.com/subhoshree15/P19C/wish/1099570996