A solution was prepared from 1.023 g of the primary standard tris (Table 10 - 4) plus

Question:

A solution was prepared from 1.023 g of the primary standard tris (Table 10 - 4) plus 99.367 g of water; 4.963 g of the solution were titrated with 5.262 g of aqueous HNO3 to reach the methyl red end point. Calculate the concentration of the HNO3 (expressed as mol HNO3/kg solution).