Chapter 20, Problem 21a
At 900 °C, titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and molten magnesium chloride. (a) Write a balanced equation for this reaction.
Video transcript
Indicate whether the following balanced equations involve oxidation–reduction. If they do, identify the elements that undergo changes in oxidation number. (a) PBr3(l) + 3 H2O(l) → H3PO3(aq) + 3 HBr(aq)
Indicate whether the following balanced equations involve oxidation–reduction. If they do, identify the elements that undergo changes in oxidation number. (b) NaI(aq) + 3 HOCl(aq) → NaIO3(aq) + 3 HCl(aq)
Indicate whether the following balanced equations involve oxidation–reduction. If they do, identify the elements that undergo changes in oxidation number. (a) 2 AgNO3(aq) + CoCl2(aq) → 2 AgCl(s) + Co(NO3)2(aq)
Hydrazine 1N2H42 and dinitrogen tetroxide 1N2O42 form a self-igniting mixture that has been used as a rocket propellant. The reaction products are N2 and H2O. (c) Which substance serves as the reducing agent and which as the oxidizing agent?
Complete and balance the following half-reactions. In each case, indicate whether the half-reaction is an oxidation or a reduction. (b) TiO21s2 ¡ Ti2+1aq2 (acidic solution)
Complete and balance the following half-reactions in basic solution. In each case, indicate whether the half-reaction is an oxidation or a reduction.
a. OH−(𝑎𝑞)⟶O2(𝑔)
b. SO32−(𝑎𝑞)⟶SO42−(𝑎𝑞)
c. N2(𝑔)⟶NH3(𝑔)
d. HO2−(𝑎𝑞)⟶OH−(𝑎𝑞)