https://padlet.com/subhoshree15/49D Part-4 en-us 2021-01-15 04:23:29 UTC 2021-01-15 05:37:58 UTC hello@padlet.com https://padlet.com/subhoshree15/49D/wish/1090018327 Metal = M
Sulphuric acid=H2SO4
Hydrogen=H2
General Equation:
M + H2SO4 ------  MSO4 + H2

Examples:
Mg + H2SO4 ----- MgSO4 + H2
A small piece of magnesium ribbon is dropped in a test tube containing H2SO4. 
Observation
1. A brisk effervescence takes place
2. A colourless, odourless gas is evolved
3. It burns with a pop sound and with a pale blue flame when a wooden burning splinter is bought near it
4. A solid is formed

Inference: solid:MgSO4 gas:H2]]> 2021-01-15 05:04:58 UTC https://padlet.com/subhoshree15/49D/wish/1090018327 panav_khungar https://padlet.com/subhoshree15/49D/wish/1090018942 metal=  M
carbonate :Co3
dilute sulphuric acid = H2So4
general Equation: if a metal carbonate :
 M+ H2So4 ----> Mso4 + H2o + Co2
metal : m 
bicarbonate: HCo3
dilute sulphuric acid H2So4
general equation: MHCo3 + H2So4 ---> MSo4 + H2o + Co2
examples :
Na2Co3 +H2So4 ----> Na2So4 +H2o + Co2 
NaHCo3 + H2So4---> Na2So4 + H2O + Co2
Observation:


]]> 2021-01-15 05:05:35 UTC https://padlet.com/subhoshree15/49D/wish/1090018942 https://padlet.com/subhoshree15/49D/wish/1090019363 Metal= M
Sulphite= SO3
Sulphuric Acid = H2S04
General equation:
MSO3 +  H2SO4---->  MSO4 + H20 + SO2
Examples:
Na2SO3 + H2SO4 -----> Na2SO4 + H20 + SO2
K2SO3 + H2SO4-----> K2S04 + H20 + SO2
Observations: 
1. A colourless gas with suffocating smell of burning sulphur is evolved.
2. Gas turns lime water milky
3. It also turns acidified potassium dichromate paper green.
Inference:gas: S02, solid: K2SO3,
Na2SO3]]> 2021-01-15 05:06:04 UTC https://padlet.com/subhoshree15/49D/wish/1090019363 https://padlet.com/subhoshree15/49D/wish/1090026222 Zn + H2SO4----- ZnSO4 + H2
Observation:
1. A colourless substance
2. Vigorous effervescence
3. A colourless, odourless gas is evolved
4. The gas burns with a pale blue flame and with a pop sound when a burning wooden splinter is brought near it

Inference: H2 gas and anhydrous ZnSO4

]]> 2021-01-15 05:13:17 UTC https://padlet.com/subhoshree15/49D/wish/1090026222 https://padlet.com/subhoshree15/49D/wish/1090036291 q1: a
 Gas A is Sulphur Dioxide
Sulphur Dioxide decolourises Acidified Potassium dichromate paper
 This test distinguishes SO2 from CO2 as CO2 has no effect on Potassium dichromate

b. It is a basic gas
Ammonia]]> 2021-01-15 05:25:05 UTC https://padlet.com/subhoshree15/49D/wish/1090036291 https://padlet.com/subhoshree15/49D/wish/1090037700 Q1)
c) Hydrogen chloride
The product is Ammonium Chloride
It is a combination reaction
d)Chlorine, it is an acidic gas.]]> 2021-01-15 05:26:51 UTC https://padlet.com/subhoshree15/49D/wish/1090037700 https://padlet.com/subhoshree15/49D/wish/1090041905 q2
1. Nitrogen Dioxide
2.Sulphur Dioxide
3. Oxygen]]> 2021-01-15 05:32:14 UTC https://padlet.com/subhoshree15/49D/wish/1090041905 https://padlet.com/subhoshree15/49D/wish/1090043807 3. a. H2S
b. Lead Acetate and Lead Nitrate, Lead sulphide]]> 2021-01-15 05:34:18 UTC https://padlet.com/subhoshree15/49D/wish/1090043807 https://padlet.com/subhoshree15/49D/wish/1090045266 Kunwar

Metal=M
Sulphide =S
Sulphuric Acid=H2SO4
Examples:
(A) FeS+H2SO4=Na2SO4+H2O+CO2
(B) 2NaHCO3+H2SO4=Na2SO4+2H2O+CO2

]]> 2021-01-15 05:35:57 UTC https://padlet.com/subhoshree15/49D/wish/1090045266 https://padlet.com/subhoshree15/49D/wish/1090046560 Observations: Gas evolved is carbon dioxide
Substances may be a carbonate or hydrogen carbonate

]]> 2021-01-15 05:37:23 UTC https://padlet.com/subhoshree15/49D/wish/1090046560