A) \[N{{a}_{2}}C{{O}_{3}}\] is used in glass industry
B) \[KHC{{O}_{3}}\] is acidic salt
C) \[{{K}_{2}}C{{O}_{3}}\] can be prepared by Solvay process
D) \[N{{a}_{2}}C{{O}_{3}}\] is used for metal refining
Correct Answer: C
Solution :
Solvay process is used for preparation of\[N{{a}_{2}}C{{O}_{3}}\]. In this process, precipitate of \[NaHC{{O}_{3}}\] is obtained, which is filtered and heated up to obtain \[N{{a}_{2}}C{{O}_{3}}\]. Step I \[N{{H}_{3}}+{{H}_{2}}O+C{{O}_{2}}\xrightarrow{{}}N{{H}_{4}}HC{{O}_{3}}\] \[CaC{{O}_{3}}\xrightarrow{\Delta }CaO+C{{O}_{2}}\] Step II \[NaCl+N{{H}_{4}}HC{{O}_{3}}\xrightarrow{{}}NaHC{{O}_{3}}+N{{H}_{4}}Cl\] Step III \[2NaHC{{O}_{3}}\xrightarrow{\Delta }N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O+C{{O}_{2}}\] But in case of potassium, \[KHC{{O}_{3}}\] is soluble in water so it cannot be precipitated out. Due to which its decomposition is not possible. Hence, \[{{K}_{2}}C{{O}_{3}}\] cannot be obtained from this process,
You need to login to perform this action.
You will be redirected in
3 sec
