7 A 0 13 g of a specimen containing MnO IS 5 iodide ions If

Last updated: 7/4/2023

7 A 0 13 g of a specimen containing MnO IS 5 iodide ions If iodine liberated requires 30 0 mL of 0 075 M solution of Na S O3 the percentage of MnO in the mineral is a 75 3 b 85 3 c 95 3 d None KA Mod at 8 The mass of K Cr O required to produce 5 0 L CO 77 C and 0 82 atm pressure from excess of oxalic acid 6 b and volume of 0 1 N NaOH required to neutralise the CO evolved respectively are 1 mens b 5 g 1 86 L d None a 7 g 2 86 Lister c 4 g 0 86 L 59 A mixture of Na C O and KHC O4 H C O4 required equal volumes of 0 2 M KMnO4 and 0 2 M NaOH separately m