Giúp mình pthh với ạ : $1. RCHO + H_2 ⇄$ $2. CH_3COOH + Na \to$ $3.HCOOH + KOH \to$ $4. CH_3COOH + C_2H_5OH ⇄$ $5. RCOOH+ ROH ⇄$ $6. RCHO + AgNO_3 + NH_3 \to$

1. $RCHO+H_2\xrightarrow{{Ni, t^o}} RCH_2OH$

2. $2CH_3COOH+2Na\to 2CH_3COONa+H_2$

3. $HCOOH+KOH\to HCOOK+H_2O$

4. $CH_3COOH+C_2H_5OH\buildrel{{H_2SO_4 đ, t^o}}\over\rightleftharpoons CH_3COOC_2H_5+H_2O$

5. $RCOOH+ROH\buildrel{{H_2SO_4 đ, t^o}}\over\rightleftharpoons RCOOR+H_2O$

6. $RCHO+2AgNO_3+3NH_3+H_2O\to RCOONH_4+2Ag+2NH_4NO_3$