Dissolved carbon dioxide causes unpolluted rain to have a pH of approximately 5, but other dissolved gases can result in a much lower pH. State one environmental effect of acid rain.

Formulate the equation for the reaction of nitrogen dioxide, NO₂, with water to form two acids.

Suggest why the experiment should be carried out in a fume hood or in a well-ventilated laboratory.

Formulate the equation for the reaction of one of the acids produced in (e)(i) with calcium carbonate.

State the equation for the reaction of NO₂ in the atmosphere to produce acid deposition.

What is the major reason why the pH of unpolluted rain is less than 7?

A. methane

B. carbon dioxide

C. nitrogen oxides

D. sulfur dioxide

Dissolved carbon dioxide causes unpolluted rain to have a pH of approximately 5, but other dissolved gases can result in a much lower pH. State one environmental effect of acid rain.

Outline how one calcium compound in the lime cycle can reduce a problem caused by acid deposition.

State the product formed from the reaction of SO₃ with water.

Which of these oxides contribute to acid deposition?

I.  ${\mathrm{SO}}_2$
II.  ${\mathrm{NO}}_2$
III.  ${\mathrm{CO}}_2$

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

Outline how one calcium compound in the lime cycle can reduce a problem caused by acid deposition.