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Some Basic Concepts of Chemistry question

2018 · Shift 2 · Q6
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Some Basic Concepts of Chemistry question

2018 · Shift 2 · Q6

JEE AdvancedChemistrySome Basic Concepts of ChemistryNumerical+3 / −1
To measure the quantity of MnCl2MnC{l_2}MnCl2​ dissolved in an aqueous solution, it was completely converted to KMnO4KMn{O_4}KMnO4​ using the reaction, MnCl2+K2S2O8+H2O→KMnO4+H2SO4+HClMnC{l_2} + {K_2}{S_2}{O_8} + {H_2}O \to KMn{O_4} + {H_2}S{O_4} + HClMnCl2​+K2​S2​O8​+H2​O→KMnO4​+H2​SO4​+HCl(equation not balanced). Few drops of concentrated HClHClHCl were added to this solution and gently warmed. Further, oxalic acid (225mg225mg225mg) was added in portions till the colour of the permanganate ion disappeared. The quantity of MnCl2MnC{l_2}MnCl2​(in mg) present in the initial solution is ‾\underline{\hspace{2cm}}​. (Atomic weights in g  mol−1:Mn=55,Cl=35.5g\,\,mo{l^{ - 1}}:Mn = 55,Cl = 35.5gmol−1:Mn=55,Cl=35.5 )
Numerical answer
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