A vessel of volume `2000cm^(3)` contains `0.1 mol` of oxygen and `0.2mol` of carbon dioxide. If the temperature if the mixture is `300K`, find its pressure.
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Ammonia contains 82.32% of nitrogen and 17.65 % of hydrogen . Water contains 88.90% of oxygen and 11.10% of hydrogen . Nitrogen trioxide contains 63.1
In `NH_(3), 17.65 g` of H combine with N=82.35 g `therefore` 1 g of H combine with H`=(82.35)/(17.65) g` =4.66 g In `H_(2)O, 11.10 g` of H combine with O=88.90...
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Melting point of a solid is x K and its latent heat of fusion is 600 cal `mol^(-1)`. The entropy change for fusion of 1 mol solid is 2 cal `mol^(-1)K^
Correct Answer - C `(DeltaH_("fusion"))/(T_("mp"))=DeltaS_(fusion)` `(600)/(T)=2` `T=300K`
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1 mole of an ideal gas `(C_(V)=12.55JK^(-1)" "mol^(-1))` at 300K is compressed adiabatically and reversibly to one-fourth of its original volu.e What
Correct Answer - 752 K
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An impure sample of calcium carbon contains 80% pure of impure sample reacted with excess of hydrochloric acid. Calculate the volume of carbon dioxide
100g of impure of calcium carbonate contain=80g pure of calcium carbonate 25g impure calcium carbonate sample contain `=(80)/(100)xx25` =20g of pure calcium carbonate The desired equation is `underset(100g)underset(1"mol")(CaCO_(3))+2HCl to CaCl_(2)+underset("at...
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In a zinc manganese dioxide dry cell, the anode is made up of zinc and cathode of a carbon rod surrounded by a mixture of `MnO_(2)`, carbon `NH_(4)Cl
When `MnO_(2)` will be used up in cathodic process, the dry cell will stop to produce current. Cathodic process: `overset(+4)(2MnO_(2))(s) + Zn^(2+) + 2e^(-) rarr overset(+3)(ZnMn_(2)O_(4))` Equivlanet mass of `MnO_(2)...
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For 0.2 mol `C_(3)H_(4)` and 0.5 mol `C_(2)H_(6)` gas mixture? Mass of mixture is 23 g It includes 1.6 mol C atom It includes `0.7 xx 6.022 xx 10^(23)
Correct Answer - C Mass of mixture `= 0.2 xx40+0.5 xx30=23 gm` Mole of c-atom `=0.2xx3+0.5xx2=1.6` mole Number of molecule `=(0.2 +0.5)N_(A)`
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12.8 gm mixture of CO and `CO_(2)` exerts a pressure of 6atm at 300K in 1.642 litre container. If all the oxygen of this mixture is used to form `H_(2
`n=(PV)/(RT)=(6xx0.821xx2)/(0.0821xx300)=0.4` mole `n_(CO)+n_(CO_(2))=0.4` ` x xx 28+(0.4-x)xx44=12.8` (total mass of mixture) Solve x=0.3 0.3 mole CO and 0.1 mole `CO_(2)` mole of O-atom `=0.3+0.2=0.5` mole of `H_(2)O` formed =0.5 mass of...
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A gas is filled in a vessel at a certain temperature and at a pressure of `80 cm` of Hg. At the same temperature, more gas is filled in the vessel so
Correct Answer - `128 cm` of Hg
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(i) Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk. (ii) If in a stick of chalk, carbon is 3g,
Correct Answer - (i) 12% (ii) 25g
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Statement I : When carbon dioxide passes through lime water it will turn into milky. Statement II : When excess of carbon dioxide
A) Both statements are true
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