20 mL of 0.02 M K2Cr2O7 solution is used for the titration of 10 mL of

1.	20 mL of 0.02 M K2Cr2O7 solution is used for the titration of 10 mL of Fe2+ solution in the acidic medium.The molarity of Fe2+ solution is ______ × 10-2 M. (Nearest Integer)
Answer» Eq. of K₂Cr₂O₇ = Eq. of Fe²⁺ ⇒ (Molarity × volume × n.f) of K₂Cr₂O₇ = (molarity × volume × n.f ) of Fe²⁺ ⇒ 0.02 × 20 × 6 = M × 10 × 1 ⇒ M = 0.24 ⇒ Molarity = 24 × 10^-2

20 mL of 0.02 M K2Cr2O7 solution is used for the titration of 10 mL of Fe2+ solution in the acidic medium.The molarity of Fe2+ solution is ______ × 10-2 M. (Nearest Integer)

Answer»

Eq. of K₂Cr₂O₇ = Eq. of Fe²⁺

⇒ (Molarity × volume × n.f) of K₂Cr₂O₇ = (molarity × volume × n.f ) of Fe²⁺

⇒ 0.02 × 20 × 6 = M × 10 × 1

⇒ M = 0.24

⇒ Molarity = 24 × 10^-2

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20 mL of 0.02 M K2Cr2O7 solution is used for the titration of 10 mL of Fe2+ solution in the acidic medium.The molarity of Fe2+ solution is ______ × 10-2 M. (Nearest Integer)

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