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What mass of K2CrO4 is required to prepare 250cm3 of 0.020 mol dm3 solution?[K2C...



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  • 1 mole m-3 K2CrO4 contains 194.2g mol-1 in 1000cm3
    1 mole m-3 K2CrO4 contains 92.2g mol-1 in 500cm3
    1 mole m-3 K2CrO4 contains 48.55g mol-1 in 250cm3
    If n molm-3 K2CrO4 contain 48.55
    0.02 molm-3 will contain (0.02/1) * (48.55/1) = 0.97g

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