Please help !! how come the first carbon in glucose is considered to be an aldehyde while the rest are hydroxyl. why can't they all be the same?
this is for an assignment. thank u.

Hbr dissociates to form h+ and br-ca(oh)2 dissociates to form ca2+ and 2oh-the h+ and oh- react to form waterassuming the reactants are dissolved in water, the net reaction is h+ + oh- —> h2oif you’re asked to show all components of the reaction, the complete reaction is 2hbr + ca(oh)2 —> cabr2 + 2h2o

H tricky one let me think and get back to u

Putting salt in vinegar water

The answer will be c