Hsc M/c 2001 (1 Viewer)

[ByteMe]

Can some1 help me out?

Last yr's hsc, question 5.

Why is the answer A. How does CO2 change the acidity of unpolluted rain?

 

[BlackJack]

Water vapour in the atmosphere, become liquid in the clouds. CO2 is dissolved into these small droplets, and they become aqueous (oooh, 4 vowels in a row...), reacting with H2O... makes H2CO3
Thus more acidic.

It goes naturally as CO2 is always in the atmosphere at around 0.01% highly depending on location.

btw, which code refers to the subtext 2? In your post w/ the CO2...

 

[McLake]

Originally posted by BlackJack
btw, which code refers to the subtext 2? In your post w/ the CO2...

1234567890 The word "size = 1" in brackets ...