Which of the following statements is corrected about equivalent weight of `KMnO_(4)`?A. Equivalent weight is `(1)/(3)` of molecular mass in neutral and weak basic mediumB. Equivalent weight is `(1)/(5)` of molecular mass in basic mediumC. Equivalent weight is equal to molecular mass in acidic mediumD. Equivalent weight is `(1)/(3)` of molecular mass in acidic medium

Which of the following statements is corrected about equivalent weight

1.	Which of the following statements is corrected about equivalent weight of `KMnO_(4)`?A. Equivalent weight is `(1)/(3)` of molecular mass in neutral and weak basic mediumB. Equivalent weight is `(1)/(5)` of molecular mass in basic mediumC. Equivalent weight is equal to molecular mass in acidic mediumD. Equivalent weight is `(1)/(3)` of molecular mass in acidic medium
Answer» Correct Answer - a

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`0.80 g` of sample of impure potassium dichromate was dissolved in water and made up to `500 mL` solution. `25 mL` of this solution treated with excess of `KI` in acidic medium and `I_(2)` liberated required `24 mL` of a sodium thiosulphate solution. `30 mL` of this sodium thiosulphate solution required `15 mL` of `N//20` solution of pure potassium dichromate. What was the percentage of `K_(2)Cr_(2)O_(7)` in given sample?A. `73.5%`B. `75.3%`C. `36.75%`D. none of these
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The unbalanced equation for the reaction of `P_(4)S_(3)` with nitrate in aqueous acidic medium is given below : `P_(4)S_(3)+NO_(3)^(-)rarrH_(3)PO_(4)+SO_(4)^(2-)+NO` the number of moles of water reuired per mole of `P_(4)S_(3)` is :A. 18B. `(8)/(3)`C. 8D. 28
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