This preview shows pages 1–3. Sign up to view the full content.

Homework 5 ( Answers) 1. In aqueous solution, Cr 2 O 7 -2 reacts with H 2 S (g) to give S (s) and Cr +3 (aq) . When the equation is completed and balanced, the coefficient of H + (aq) in the overall net ionic equation is a) 4 b) 6 c) 8 d) 14 2. Given the half-reaction Cl - (aq) ClO 4 - (aq) in basic solution. How many hydroxide ions are in the balanced half-reaction? a) 2 b) 4 c) 6 d) 8 3. Consider the half-reaction: RuO Ru 2 (SO 4 ) 3 Which statement is correct: “In the above half-reaction…” a) RuO is the reducing agent b) RuO is the oxidizing agent c) RuO is the oxidized form of the reducing agent d) RuO is the reduced form of the oxidizing agent 4. Calculate the frequency of light of wavelength 468 nm. C = 3.00 * 10 8 m.s -1 a) 4.68 * 10 14 Hz b) 6.41 * 10 -2 Hz c) 6.41 * 10 18 Hz d) 6.41 * 10 14 Hz

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
5. Calculate the energy of a photon of light having a wavelength of 551 nm. C = 3.00 * 10 8 m.s 1 h = 6.63 * 10 -34 J.s a) 3.61 * 10 -17 J b) 3.61 * 10 -19 J c) 3.61 * 10 -33 J d) None of these
This is the end of the preview. Sign up to access the rest of the document.