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Question

Calculate the mass of K2Cr2O7 required to produce 254 g I2 from KI solution.
K2Cr2O7+KICr3++I2

(Molar mass of K2Cr2O7 is 294 g mol1)

A
49 g
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B
98 g
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C
9.8 g
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D
49 g
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