State Whether the Disorder of Each of the Following Systems $\rightarrow$

State whether the disorder of each of the following systems increases or decreases in the stated process without consulting any tables:
i. 2 S _(s) + 3 O_{2 (g)} $\rightarrow$ 2 SO_{3 (g)}
ii. CO_{2 (g)} $\rightarrow$ CO_{2 (s)}
iii. heating water from 5 °C to 75 °C