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प्रश्न
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
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.
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संबंधित प्रश्न
Write an equation for the reaction of hydrochloric acid on caustic soda solution.
Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%.
Convert two soluble metallic nitrates to insoluble metallic chlorides using \[\ce{dil. HCl}\].
Name the following:
Gas obtained by treating ferrous sulphide with hydrochloric acid.
Write balanced equcation for the following reaction:
Manganese (IV) oxide and concentrated hydrochloric acid.
What is the property of concentrated sulphuric acid which allows it to be used in the preparation of hydrogen chloride and nitric 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
Give a chemical test to distinguish between the following pair of compounds:
Sodium chloride solution and sodium nitrate solution.
Identify the salts P and Q from the observation given below:
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky. When NH4OH soltion is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
Write an equation for the reactions of hydrochloric acid on manganese (IV) oxide.
