When concentrated `H_2SO_4` is added to `NaCl` solid, then `HCl` gas is liberated because

concentrated H_2 SO_4 can be used to dry which gas ?

What happens when (i) Concentrated H_2 SO_4 is added to calcium fluoride. (ii) SO_3 is passed through water ?

What happens when (i) Concentrated H_2 SO_4 is added to calcium fluoride. (ii) SO_3 is passed through water ?

When dilute H_(2)SO_(4) is electrolyzed between Pt electrodes, the gas liberated at the anode will be ………………………….

Iron, once dipped in concentrated H_2SO_4 , does not displace copper from copper sulphate solution, because

When copper metal is treated with concentrated sulphuric acid, the gas liberated is

(a) When concentrated sulphuric acid was added to an unknown salt present in a test tube a brown gas (A) was evolved . This gas intensified when copper turnings were added to this test tube . On cooling, the gas (A) changed into a colourless solid (B) . (i) Identify (A) and (B). (ii) Write the structures of (A) and (B). (iii) Why does gas (A) change to solid on cooling ? (b) Arrange the following in the decreasing order of their reducing character : HF , HCl , HBr , HI (c) Complete the following reaction : XeF_(4) + SbF_(5) to

An explosion takes place when conc. H_2SO_4 is added to KMnO_4 . Which of the following is formed?

A liquid was mixed with ethanol and a drop of concentrated H_(2) SO_(4) was added. A compound with a fruity smell was formed. The liquid was

A liquid was mixed with ethanol and a drop of concentrated H_(2) SO_(4) was added. A compound with a fruity smell was formed. The liquid was