Soap contains the sodium salts of a mixture of long chain carboxylic acids (typically 12-16 carbon atoms). The acids are less water soluble than the salts and precipitate when soap solution is acidified.
that's because soap contains sodium salt and a mixture of carboxylic acid. when HCL added, percipate formed due to acids are less soluble in water
2HCl + Na2S ---> 2NaCl + H2S
Calcium chloride, carbon dioxide and water
HCl is added to speed up the reaction.
KCl and water are formed.
Hydrochloric acid means the 36% solution (maximum) of HCl gas in water, when chlorine is added to this solution a small amount of HOCl is formed along with HCl, it is a useless reaction.
Calcium chloride, carbon dioxide and water
2HCl + Na2S ---> 2NaCl + H2S
Al+HCl gives AlCl3+hydrogen So aluminium chloride is formed as a result.
HCl is added to speed up the reaction.
KCl and water are formed.
Hydrochloric acid means the 36% solution (maximum) of HCl gas in water, when chlorine is added to this solution a small amount of HOCl is formed along with HCl, it is a useless reaction.
There is no reaction between KF and HCl.
The reaction is:SbCl3 + H2O = SbOCl + 2 HCl
When casein is added to HCl, it becomes a precipitate. It does this because of a process called acid coagulation.
CaCl2 and water
When Dilute HCL is added to water a more diluted solution of HCl is made.
when aluminium is added to dil. hcl it forms aluminium chloride and hydrogen gas. 4 Al + +6 HCL=2 Al2CO3 + 3 H2