complete the chain of chemical reactions

[DieuTa]

Please help me complete the chain of chemical reactions
butanoic acid + P₂O₅ = "A", "A" + NH₃ = "B", "B" + P₂O₅ = "C"
thank you so much.

[ChenBeier]

Its not a homework forum. What are your own ideas.

[DieuTa]

Its not a homework forum. What are your own ideas.

I got the result for A (CH₃CH₂CH₂)₂O, but I can't determine B because the reaction gives 2 substances ( Ch₃CH₂CH₂COOH and CH₃CH₂CH₂CONH₂) so I can't determine C either

[ChenBeier]

The first one is not an ether as you wrote. It will be an acid anhydride. B will be the mixture of acid and amide and C will be an imide.