Study of compounds a. hydrogen chloride - class-X
study of compounds a. hydrogen chloride
Questions
Select the correct statement among the following.
- Hydrogen chloride is prepared by passing chlorine gas through hot water
- Hydrogen chloride is produced by combination of moist hydrogen gas with chlorine in the presence of diffused sunlight
- Hydrogen chloride can't be produced in the dark
- Activated carbon is used as a catalyst in the synthesis of hydrogen chloride
Moist hydrogen gas combines with chlorine in the presence of diffused sunlight to form $HCl$. The catalyst used here is :
- oxygen.
- silica.
- alum.
- moisture.
The reaction equation of the preparation of $HCl$ by synthesis is given by:
- $NaCl + H _2SO _4 \rightarrow NaHSO _4+HCl$
- $NaHSO _4+NaCl \rightarrow HCl+NaSO _4$
- $H _2+Cl _2 \rightarrow 2HCl$
- None of these
In the laboratory preparation of $HCl$, which of the following are preferred?
- Conc. $H _2SO _4$ as reactant
- Conc. $H _2SO _4$ as drying agent
- Temperature of reaction mixture below $200^0C$
- Use of activated carbon as catalyst
Metal chloride + Sulphuric acid$\longrightarrow$.............. + Hydrogen chloride :
- Metallic sulphate
- Metallic bisulphate
- Metallic sulphide
- None of the above
The reaction of moist hydrogen gas with chlorine is explosive in the presence of :
- hydrogen
- oxygen
- darkness
- direct sunlight
Drying agents used in the purification of hydrogen chloride is/are:
- conc. $H _2SO _4$
- $P _2O _5$
- $CaO$
- all of the above
HCl can be prepared by:
- $NaCl$ + $H _{2}SO _{4}$$\overset{420K}\rightarrow$
- $NaHSO _{4}$ + $NaCl$ $\overset{823K}\rightarrow$
- $NaNO _3$ + $H _{2}SO _{4}$ $\rightarrow$
- both (A) and (B).
- True
- False
The compound which does not have oxygen is :
- nitric acid
- sodium hydroxide
- hydrochloric acid
- acetic acid
Identify the gas evolved when potassium sulphite is treated with dilute hydrochloric acid.
- ${ S } _{ 2 }$
- ${ O } _{ 2 }$
- ${ SO } _{ 2 }$
- None of these
Which of the following gas is evolved when concentrated hydrochloric acid is made to react with manganese dioxide?
- ${ O} _{ 3 }$
- ${ O } _{ 2 }$
- ${ H} _{ 2 }$
- ${ Cl } _{ 2 }$
Iron reacts with hydrogen chloride gas-forming (iron [II] chloride, iron [III] chloride) and hydrogen, The reaction is an example of :
- double decomposition
- synthesis
- simple displacement
- None of these
Hydrochloric acid can be converted into chlorine by heating with :
- calcium oxide
- lead [III] oxide
- lead [IV] oxide
- lead [II] oxide
Compounds $A$ and $B$ are treated with dilute $HCl$ separately. The gases liberated are $Y$ and $Z$ respectively $Y$ turns acidified dichromate paper green while $Z$ turns lead acetate paper black. So $A$ and $B$ compounds are respectively:
- $Na _2SO _3, Na _2S$
- $NaCl, Na _2CO _3$
- $Na _2S, Na _2SO _3$
- $Na _2SO _3, K _2SO _4$
On adding few drops of dil. HCl to freshly precipitated ferric hydroxide, a red coloured colloidal solution is obtained. The phenomenon is known as :
- protective action
- flocculation
- coagulation
- peptisation
$HCl$ gas cannot be dried by passing through:
- $H _{2}SO _{4}$
- $CaO$
- $P _{2}O _{5}$
- $CO$
$HCl$ gas does not effect a dry strip of blue litmus paper but it turns red in the presence of a drop of water ?
- Blue litmus paper in the presence of water accepts the proton from $HCl$ and turns blue to red
- Blue litmus paper in the presence of water accepts the chloride ion from $HCl$ and turns blue to red
- Blue litmus paper in the presence of water with acid do not turn into red
- None of the above
When phosphorous pentoxide is reacted with $HCl$ gas, products are:
- $POCl _3$
- $P _4O _{10}$
- $H _3PO _2$
- $HPO _3$
Observing the method of collection of the gas, what you can tell about the density of hydrogen chloride?
- A gas that is more dense than air
- A gas that is less dense than air
- A gas (liqued form ) that is less dense than air
- None of these
Which compound(s) is/are produced when hydrochloric acid is added to silver nitrate solution?
- ${ HNO } _{ 3 }$
- $AgCl$
- Both A and B
- None of these
$HCl$ is prepared by heating $NaCl$ with $conc.{ H } _{ 2 }S{ O } _{ 4 }$. But $HI$ cannot be prepared by treating $NaI$ with $conc.{ H } _{ 2 }S{ O } _{ 4 }$. Identify the reason.
- ${ H } _{ 2 }S{ O } _{ 4 }$ is oxidised by $HI$ and not oxidised by $HCl$
- $HI$ is oxidised by ${ H } _{ 2 }S{ O } _{ 4 }$ and $HCl$ is not oxidised by $HI$
- $HI$ dissociates on treatment with ${ H } _{ 2 }S{ O } _{ 4 }$ and $HCl$ does not dissociate
- Reaction of ${ H } _{ 2 }S{ O } _{ 4 }$ with $HI$ is reversible whereas with $HCl$ is irreversible
Glaber prepared $HCl$ from which of the following compounds?
- $NaCl,H _2SO _4$
- $NaCl,H _2CO _3$
- $NaCl,HNO _3$
- $KCl,H _2SO _4$
In the Hydrolysis of ICl , the products are :
- HI +HCl
- HI +HOCl
- HCl+HOI
- HOCl +HOI