How is hydrogen chloride prepared in the laboratory? HCI gas cannot be dired with CaO, KOH or `P_(2)O_(5)`. Explain.

How is H_(2)O_(2) preserved in the laboratory?

How can hydrogen peroxide be prepared in the laboratory? What is the limitation of this process?

How can H_(2)O_(2) be preserved in the laboratory?

Hydrogen is prepared from H_2O by adding

Chlorine is prepared in the laboratory by treating manganese dioxide (MnO_(2)) with aqueous HCl according to the reaction. 4HCl (aq) +MnO_(2)(s) to 2H_(2)O(l) +MnCl_(2)(aq)+Cl_(2)(g) how many grams of HCl reacts with 5.0g of MnO_(2) ?

Explain why neopentyl chloride cannot be prepared by reacting neopentyl alcohol with HCl.

In the laboratory preparation of H_2O_2 a paste of BaO_2 is used instead of anhydrous BaO_2 . Explain.

Write the principle of laboratory preparation of H_2O_2 with equation.

What are the materials requried for laboratory preparation of hydrogen gas?

Explain : Anhydrous magnesium chloride is prepared by heating MgCl_2 . 6H_2O in a current of dry HCl gas.