A) fusion mixture
B) soda ash
C) washing soda
D) salt soda
Correct Answer: B
Solution :
Anhydrous \[N{{a}_{2}}C{{O}_{3}}\] is called soda ash \[\underset{Washing\,soda}{\mathop{N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O}}\,\xrightarrow[(efflorescence)]{in\,air}N{{a}_{2}}C{{O}_{3}}.{{H}_{2}}O\] \[+9{{H}_{2}}O\] \[N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O\xrightarrow{\Delta }\underset{Soda\,ash}{\mathop{N{{a}_{2}}C{{O}_{3}}}}\,+10{{H}_{2}}O\]
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