Answers

2016-05-02T20:24:30+05:30
Hydrogen sulphate a gas and solid state
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yaa and break 204
so4
sulphur+oxygen =s+02 sulphur has valency 2 and oxygen also has 2 so when we criss cross it we get so4
h2+ s+02 gives h2so4
rt
2016-05-02T20:35:22+05:30
1.S+O2 ---> SO2.
2. 2 SO2+O2-->2SO3.
3. H2SO4+SO3--->H2S2O7    (OLEUM)
4. 2H2S2O7+2H2O ---> 4H2SO4
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PLS MARK AS BRAINLIEST
It is the laboratory preparation of H2SO4