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प्रश्न
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
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उत्तर
A mixture having three parts conc. Hydrochloric acid and one part conc. Nitric acid is called aqua-regia.
Nitric acid acts as an oxidizing agent.
संबंधित प्रश्न
Complete the following by selecting the correct option from the choices given:
The metal which does not react with water or dilute H2SO4 but reacts with concentrated H2SO4 is _________. (Al/Cu/Zn/Fe)
State your observation when dilute hydrochloric acid is added to a lead nitrate solution and the mixture is heated.
Write an equation for the reaction of hydrochloric acid on zinc carbonate.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium thiosulphate and sodium sulphite?
Write balanced equation for the following reaction:
Copper oxide and dilute hydrochloric acid.
Write balanced equcation for the following reaction:
Manganese (IV) oxide and concentrated hydrochloric acid.
Select from the list given (a to e) one substances in each case which matches the description given in parts (i) to (v). (Note : Each substance is used only one in the answer)
(a) Nitroso Iron (II) Sulphate
(b) Iron (III) chloride
(c) Chromium sulphate
(d) Lead (II) chloride
(e) Sodium chloride
(i) A compound which is deliquescent
(ii) A compound which is insoluble in cold water, but soluble in hot water
(iii) The compound responsible for the brown ring during the brown ring test of nitrate iron
(iv) A compound whose aqueous solution is neutral in nature
(v) The compound which is responsible for the green colouration when sulphur dioxide is passed through acidified potassium dichromate solution
State your observation when:
Decomposition of bicarbonates by dil. H2SO4
2NaHCO3 + H2SO4 → Na2SO4 + 2H2O + 2CO2
2KHCO3 + H2SO4 → K2SO4 + 2H2O + 2CO2
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
Write an equation for the reactions of hydrochloric acid on manganese (IV) oxide.
