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A sample of g 0.2050 oxalic acid (4.2 H2C2O H2O) required 25.52 mL of KOH solution to complete the neutralization according to rea
tion: HOOCCOOH + 2 KOH + KOOCCOOK ↔ H2O Which the concentration in mol L-1 of this KOH solution? A sample of an unknown oxalate 0.3025 g required 22.50 mL the same solution of KOH, what percentage expressed in H2C2O4 in the sample?

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    What is that 4.2 H2C2O4?).

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