Chemistry
Give a word equation and balanced molecular equation for the laboratory preparation of nitric acid from :
(i) KNO3
(ii) NaNO3.
Related Questions
Match the gas given in column I to the identification of the gases mentioned in column II:
Column I Column II Nitric acid A. Turns acidified potassium dichromate solution green. B. Turns lime water milky, C. Turns reddish brown when it reacts with oxygen. D. Turns moist lead acetate paper silvery black. State how atmospheric nitrogen converts itself to nitric acid.
In the laboratory preparation of nitric acid from – KNO3 or NaNO3 state :
(i) the acid used
(ii) the type of apparatus used
(iii) the precautions to be taken during the preparation
(iv) the method of collection of the acid
(v) the method of identification of the product i.e., acid formed.
Give reasons for the following — pertaining to the above laboratory preparation of nitric acid
(i) concentrated hydrochloric acid is not used as a reactant in the laboratory preparation.
(ii) the complete apparatus in the laboratory preparation does not contain parts made of rubber or cork.
(iii) the reaction temperature is maintained below 200°C
(iv) at high temperatures the sodium sulphate or potassium sulphate formed, forms a crust and sticks to the glass apparatus.