Tag: p-block elements

$HCl$ is available in free state in volcanic gases and it is also available in gastric juices of mammals and helps in digestion process of mammals.

Mutaric acid is the name given to the hydrochloric acid by Lavoisier

$HCl$ is present in free state in volcanic emissions and it is also available in gastric juices of mammals and helps in digestion process.
Hence option C is correct.

A mixture of $ZnCl _2$ and $PbCl _2$ is a non- homogeneous mixture. Hence, they can be separated using method of crystallization.

The higher the oxidation number of chlorine, higher is the acidic strength of the oxoacid of chlorine. $HClO _4$ has the highest number of oxygen atoms, hence the oxidation number of chlorine is highest in it. Therefore, it is the most acidic. Therefore, it has the smallest value of $pK _\alpha$. Similarly, the oxidation number of chlorine in $HClO$ is the lowest because it has the least number of oxygen atoms. Hence its acidic strength is the least, and so its $pK _\alpha$ is the highest.

HCl is a covalent compound which dissociates to form hydrogen and chloride ions. Benzene and toluene undergo electrophilic aromatic substitution reaction when chloride ion binds to the benzene ring forming aryl halides.

$Mn{ O } _{ 2 }+4HCl\longrightarrow Mn{ Cl } _{ 2 }+{ Cl } _{ 2 }$
Oxidation state of $Cl$ on the product side is $-1,0$

Aqueous $HCl$ is ionized as $H^{+},Cl^{-}$ which allows the electricity to flow  where as all other $HCl$ is available as unionized form which do not allow the electricity to pass.
Hence option $B$ is correct.

${ Na } _{ 2 }C{ O } _{ 3 }+HCl\longrightarrow NaCl+{ H } _{ 2 }O+C{ O } _{ 2 }$
Carbonates reacts with $HCl$ gives $C{ O } _{ 2 }$

M.W. of $H$ $=1$ g 
M.W. of $Cl$ $=35.5$ g