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\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of acid required.
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\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of acid required.
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What would be the mass of CO2 occupying a volume of 44 litres at 25°C and 750 mm pressure.
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State the position of the following in the periodic table:
Halogens
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How will you prove that hydrochloric acid contains
- hydrogen
- chlorine?
Write equations for the reactions.
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State the type of bonding present in ammonia, show by a diagram.
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What is the formula for liquid ammonia?
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Ammonia cannot be collected over water. Give reason.
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Give reasons:
Ammonium compounds do not occur as minerals.
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Ammonia is manufactured by Haber Process.
Mention two possible ways by which ammonia produced is removed from unchanged gases.
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Ammonia is manufactured by Haber Process.
What is the function of finely divided iron?
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Ammonia is manufactured by Haber Process.
What is the percentage formation of ammonia?
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Ammonia is manufactured by Haber Process.
How can this percentage formation be increased?
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A gas ‘P’ gives dense white fumes with chlorine. Its aqueous solution gives a blue colour with copper (II) hydroxide. Give the name and formula of the gas P.
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Sulphuric acid is manufactured by the contact process.
Name the catalyst used.
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Sulphuric acid is manufactured by the contact process.
Why H2SO4 is not obtained by directly reacting SO3 with water?
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Sulphuric acid is manufactured by the contact process.
Name the chemical used to dissolve SO3 and also name the product formed. Give all the main reactions to this process.
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Sulphuric acid is manufactured by the contact process
Name a gas that can be oxidized to sulphur.
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Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the sulphur.
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Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the NaOH.
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