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Give the general group characteristic applied to hydrogen with respect to similarity in properties of hydrogen with alkali metals of group 1 [IA]. With special reference to valency electrons & ion formation.
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Give a balanced equation for obtaining hydrogen from?
Boiling water using a divalent metal
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Give a reason for the following.
Hydrogen and alkali metals of group 1 [IA] react with copper [II] oxide to give copper.
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Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.
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State the following reaction represent oxidation or reduction.
\[\ce{Fe++->Fe+++}\]
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State the following reaction represent oxidation or reduction.
\[\ce{Cl- ->Cl}\]
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State the following reaction represent oxidation or reduction.
\[\ce{Cu++->Cu}\]
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State the following reaction represent oxidation or reduction.
\[\ce{Ag->Ag+}\]
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State the following reaction represent oxidation or reduction.
\[\ce{H->H+}\]
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State the following reaction represent oxidation or reduction.
\[\ce{Al->Al+++}\]
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State whether the following reaction is oxidation or reduction.
\[\ce{Na->Na+}\]
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Explain the term chemical reaction with special reference to reactants and products.
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Give a suitable example with an equation to show the representation of a chemical reaction.
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A chemical reaction is often accompanied by external indications or characteristics.
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Give two examples where a chemical reaction is accompanied by a change in colour of the reactants and products on completion of the reaction.
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Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
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Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
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Give a balanced equation for the conversion of an ammonium salt to a basic gas.
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Give a balanced equation for the conversion of a soluble lead salt to an insoluble lead salt – formed as a white precipitate.
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Explain with the help of balanced equations, how precipitation reactions are used for identifying the positive radicals in three different salts, each having a different cation [positive ion].
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