MCQ
HCHO and HCOOH are detected by:
- ANaHCO3
- BCuSO4/NaOH
- CAgNO3/NH4OH
- DAll of these
✓
Answer
- NaHCO3
Explanation:
Both HCHO and HCOOH react with AgNO3/NH4OH
CuSO4/NaOH solution. But HCOOH gives effervescences of CO2 when reacts with NaHCO3, whereas HCHO does not give any effervescence of CO2 when reacts with NaHCO3.
HCOOH + NaHCO3 $\rightarrow$ HCOONa + H2O + CO2 $\uparrow$
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