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Calculate the concentration of Na2S2O3....

Calculate the concentration of `Na_2S_2O_3.5H_2O` solution in `gL^(-1)` 10 ml of which just decolourised 15 ml of `N/20` iodine solution.

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`N_(hypo)=(15xx1/20)/10=0.075NrArr^whypo=0.075xx248=18.6gL^(-1)`
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PATHFINDER-MOLE AND STOICHIOMETRY-II-QUESTION BANK
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  2. A sample of a mixture of CaCI2 and NaCI weighing 4.22 g was treated to...

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  3. Calculate the concentration of Na2S2O3.5H2O solution in gL^(-1) 10 m...

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  8. 2 mole of N2H4 loses 16 mole of election is being converted to a new c...

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  9. N2+3H2rarr2NH3 Molecular weight of NH3 and N2 are X, and X2, their ...

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  10. In a chemical reaction, K2Cr2O7+xH2SO4+ySOzrarrK2SO4+Cr2(SO4)3+zH2O th...

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  11. For the redox reaction, MnO4^(-)+C2O4^(2-)+H^+rarrMn^(2+) + CO2+H2O...

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  12. Ratio of moles of Fe (II) oxidised by equal volumes of equimolar KMnO...

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  13. CrO7^(2-) is reduced to Cr^(3+) by Fe^(2+). Identify the incorrect st...

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  14. 6x10^(-3) mole K2Cr2O7 reacts completely with 9x10^(-3) mole X^(n+) ...

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  15. In a reaction, 4 moles of electrons are transferred to one mole of HN...

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  16. W1 g of an element combines with oxygen forming W2 g of its oxide. The...

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  17. Equivalent weight of H3PO2 when it disproportionate into PH3 and H3...

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  18. When BrO3^(-) ion reacts with Br^- in acid medium, Br(2) is liberate...

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  19. A metal oxide has the formula A2O3 It can be reduced by hydrogen to gi...

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  20. 0.3 g of an oxalate salt was dissolved in 100 ml solution. The solutio...

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