Dry hydrogen chloride gas does not turn ...

Dry hydrogen chloride gas does not turn blue litmus to red whereas hydrochloric acid does. Why?

Text Solution

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1) Dry hydrogen chloride gas do not dissociate in the absence of water. Hence it does not tum b.lue litmus to red. So dry hydrogen chloride gas is not acidic.
2) The HCl (hydrochloric acid) dissociates in the presence of water. Hence it turns blue litmus to red. So, HCl (Hydrochloric acid) is acidic. The dissociation will be as follows:
`HCl+H_2OtoH_3O^(+)+Cl^-`

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Which of the following can turn blue litmus to red colour

Dil `H_2O_2` solution

Pure`H_2O_2`

Conc. `H_2O_2` solution

Pur `D_2O`

(A) Aqueous chlorine turns blue litmus to red (R ) Aquous chlorine is acidic

Both (A) and (R ) are true and (R ) is the correct explanation of (A)

Both (A) and (R ) are true and (R ) is not the correct explanation of (A)

(A) is true but (R ) is false

Both (A) and (R ) are false

Consider the following statements : a) Hydrogen chloride gas turns red litmus blue . b) Lactic acid is one of the mineral acids . c) Milk of Magnesia is a type of milk . Which of these statement (s) is / are correct ?

a and b

a and c

All are correct

All are incorrect