Axit cacboxylic no, đơn chức, mạch hở, chứa 40% cacbon về khối lượng là

A. axit ađipic

B. axit fomic

C. axit axetic

D. axit propionic

School is one of place happy for children.Me too,my school is very wonderful.It has a lot of student,teacher and they are friendly.We learn about lifestyle. My homeroom teacher is lovely , she loves them and we are like she. I wish learn as ever to here

Phản ứng nào sau đây viết đúng?

A. 2Fe + 6HCl → FeCl₃ + 3H₂

B. Fe(NO₃)₂ + AgNO₃ → Fe(NO₃)₃ + Ag

C. FeCl₃ + Ag → AgCl + FeCl₂

D. 3Cu + 2FeCl₃ → 3CuCl₂ + 2Fe