Why HCl and HNO3 can be used in combination but HCl and H2SO4 not?

Answer 1

this is because when hcl and hno3 is mixed then it ionizes into h+and cl- and and

and you may knaw rust is the mixing of foriegn particles in the pure substances.

eg-fe+o2=fe2o3

so when gold is mixed with hcl and hnoc the it gives off aucl4. ie au pure gold is mixed with the pollutant cl4

similarly when h2so4 cant be used because s04 is not the neutral radical like no3 of hno3

thus s04 not being neutral and no3 being neutral h2so4 cant be used

Answer 2

HCl and HNO3 can be used in combination because they are strong acids that do not react with each other. However, HCl and H2SO4 cannot be used together because HCl would react with H2SO4 to form a competing acid-base reaction, reducing the efficiency of the desired reaction.