A) \[N{{a}_{2}}C{{O}_{3}}-7{{H}_{2}}O\]
B) \[N{{a}_{2}}C{{O}_{3}}-10{{H}_{2}}O\]
C) \[Na{{ }_{2}}C{{O}_{3}}-{{H}_{2}}O\]
D) \[N{{a}_{2}}C{{O}_{3}}\]
Correct Answer: B
Solution :
Sodium carbonate decahydrate is known as washing soda. Its chemical formula is\[N{{a}_{2}}C{{O}_{3}}\]\[.10{{H}_{2}}O\]. It is a white crystalline solid with no smell.
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