AP EAMCET2003Chemistrys Block Elements
A mixture of sodium oxide and calcium oxide are dissolved in water, and saturated with excess carbon dioxide gas. The resulting solution is ...... It contains ......... :
Options
- Abasic; NaOH and Ca ( OH )₂
- Bneutral; Na ₂ CO ₃ and CaCO ₃
- Cbasic; Na ₂ CO ₃ and CaCO ₃
- Dacidic; NaOH and CaCO ₃
Correct answer
C. basic; Na ₂ CO ₃ and CaCO ₃
Step-by-step solution
Na ₂ O + CaO + H ₂ O + CO ₂ Na ₂ CO ₃+ CaCO ₃ Solution is basic. It can be proved as CO ₃²⁻+2 H ₂ O H ₂ CO ₃+2 OH ⁻