When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid remainingat 1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa, Cu,0,-.in which the oxygenstoichiometry varies between 7 and 6.5 (x = 0 to 0.5).1000°C 1YBa, Cu,O, -(s) + (3.5 – x)H,(g)FM-666.19–16.00xY,0, (s) + 2 BaO(s) + 3 Cu(s) +(3.5 – x)H,O(g)YBa, Cu,O35Thermogravimetric analysis. When 33.792 mg of YBa, Cu, O,, were subjected to this analysis, 31.133 mg of solidremained after heating to 1000°C. Find the value of x in YBa,Cu,O, _r-x =Propagation of error. Suppose that the uncertainty in each mass is ±0.002 mg. Find the uncertainty in the value of x.

Solution- A superconductor is a substance that conducts electricity without resistance when it…

hen the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid rema 1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa,Cu,O7 -,, in which the c pichiometry varies between 7 and 6.5 (x = 0 to 0.5). %3D 1000°C 1 YBa, Cu,O, -(s) + (3.5 – x)H, (g) FM=666.19–16.00x 2 -Y,0,(s) + 2 BaO(s) + 3Cu(s)+(3.5 – x)H,0(g) YBa,Cu,O35 ermogravimetric analysis. When 33.792 mg of YBa,Cu,O,_, were subjected to this analysis, 31.133 mg of soli mained after heating to 1000°C. Find the value of x in YBa,Cu,O,-r

hen the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid rema 1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa,Cu,O7 -,, in which the c pichiometry varies between 7 and 6.5 (x = 0 to 0.5). %3D 1000°C 1 YBa, Cu,O, -(s) + (3.5 – x)H, (g) FM=666.19–16.00x 2 -Y,0,(s) + 2 BaO(s) + 3Cu(s)+(3.5 – x)H,0(g) YBa,Cu,O35 ermogravimetric analysis. When 33.792 mg of YBa,Cu,O,_, were subjected to this analysis, 31.133 mg of soli mained after heating to 1000°C. Find the value of x in YBa,Cu,O,-r

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 14.95QE: Nitrogen, hydrogen, and ammonia are in equilibrium in a 1000-L reactor at 550 K. The concentration...

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