1.

A 10 mg effervescent tablet containing sodium bicarbonate and oxalic acid releases 0.25 ml of CO_(2) at T = 298.15 K and p = 1 bar. If molar volume of CO_(2) is 25.0 L under such condition, what is the percentage of sodium bicarbonate in each tablet ? [Molar mass of NaHCO_(3) = 84 g mol^(-1)]

Answer»

`16.8`
`8.4`
`0.84`
`33.6`

ANSWER :B


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