Question

132) Pressurized metal gas cylinders laboratory. At times, it can be easier to chemically prepare occasionally used gases. For example, oxygen gas can be prepared by heating KMnO4(s) according to the following chemical reaction: generally used to store commonly used gases in the are 3 2KMnO4(s) K2MnO4(s) + MnO2(s) +O2(g) The above procedure was carried out starting with 93.2 g of KMnO4, and it was later determined that all of the KMnO4 reacted according to the above equation except 11.7 g. What was the percent yield for the reaction? A) 87.4% yield B) None of the above are correct C) 83.4% yield D) 81.4% yield E) 85.4% yield c0a14 (0

Answer 1

MnQ Q9) K,MnQ, ces 2KMn D.() Imole 2 mole =329 = 2 xI58 -32 316 9 From babnced eqvalin 32 316 b KMn0, yield O uei11 Yield =32 x 93.2 316 93.2 CTheortical yiets) n heacd, a(93.2 - 11t)3 thur adval yidld is alid Since all 93.2 only pdu, 32 yield 316 9 KMnO o1 ive 32x01-S 316 (Adual Yield) Yidld Aetual yield Theoritic al yield 8.25 xl00 9.44 1 wlp Like Underireal Camment