Fill in the blanks by choosing the appropriate word/words from those given in the brackets: [proton acceptor, pressures, non-spontaneous, proton donor, spontaneous, 3°, brown, red, 1°, temperatures, copper acetylide]
(i) According to Bronsted and Lowry, an acid is a_______
(ii) When `DeltaH` is a negative and T`Delta`S is a positive, the process is______
(iii) The +I effect of alkyl groups is in the order ______ `gt 2^(@) gt` ________
(iv) When acetylene is treated with ammoniacal cuprous chloride a _____ precipitate of _____ is formed.