Chemistry

Chemistry

Problem

Solid potassium chlorate decomposes according to 2KClO3 (s)→2KCl (s)+3O2 (g)2\text{KClO}_{3}\,(s) \rightarrow 2\text{KCl}\,(s) + 3\text{O}_{2}\,(g). In a sealed 10.0 L10.0\,\text{L} vessel, the concentration of O2O_{2} increases at 1.20×10−3 mol L−1 s−11.20 \times 10^{-3}\,\text{mol}\,\text{L}^{-1}\,\text{s}^{-1}. At what mass rate (g s−1\text{g}\,\text{s}^{-1}) does KClO3\text{KClO}_{3} decompose? (Molar mass  KClO3=122.55 g mol−1\,\text{KClO}_{3} = 122.55\,\text{g}\,\text{mol}^{-1}.) a) 1.50 g s−11.50\,\text{g}\,\text{s}^{-1} b) 0.98 g s−10.98\,\text{g}\,\text{s}^{-1} c) 0.65 g s−10.65\,\text{g}\,\text{s}^{-1} d) 0.33 g s−10.33\,\text{g}\,\text{s}^{-1}

Browse the problem library