Question

list from strongest acid to weakest acid

HC(triple bond)CCH3
H2C=CH2
H3CNH2
CH4
H2O

i thought the order went
HC(triple)CCH3
H3CNH2
H2O
H2C=CH2
CH4

but it comes out as wrong and i don't know why >

Answer 1

H2O >HC(triple)CCH3 >H3CNH2 >H2C=CH2 >CH4
I'm not sure why H2O is 1st but this is the answer i got in my sapling