2. Write word equations for these reactions: (a) Sugar breaks down into carbon and water,
(b) Iron, water, and oxygen produce rust.
(c) Carbonic acid breaks down

Explanation:

glucose -> carbon + water

iron + water + oxygen -> iron oxide

carbonic acid -> carbon dioxide + water

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm