A 10 mg effervescent tablet containing sodium bicarbonate and oxalic acid release 0.25 ml of `CO_2` at T=298.15 K and p=1 bar. If molar volume of `CO_2` is 25.0L under such condition, the number of mole of sodium bicarbonate in each tablet is `10^(-x)` . What is numerical value of x. [Molar mass of `NaHCO_3 =84 g mol^(-1)` ]

Explanation

`HCO_3^(-) + H^(+) to H_2O +CO_2`
`n_(CO_2)=0.25/(25xx10^3)=10^(-5) mol=n_(NaHCO_3)`