A 10 mg effervescent tablet containing sodium bicarbonate and oxalic acid release 0.25 m l 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)`]
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) ]
The amount of oxalic acid required to prepare 300 mL of 2.5 M solution is : (molar mass of oxalic acid = 90 g mol^(–1) ) :
25.3 g of sodium carbonate, Na_(2)CO_(3) is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ions, Na^(+) and carbonate ions, CO_(3)^(2-) are respectively (Molar mass of NaCO_(3)=106g mol^(-1) )
100 mL of a water sample contains 0.81g of calcium bicarbonate and 0.73g of magnesium bicarbonate. The hardness of this water sample expressed in terms of equivalent of CaCo_3 is 10^x ppm. What is numerical value of x? (molar mass of calcium bicarbonate is 162 gmol^(-1) and magnesium bicarbonate is 146g mol^(-1))
