Question

25 ml 0.1 n h2so4 neutralized with 20 ml xn na2co3. what will be g/liter of na2co3​

Answer 1

Answer:

Explanation:      Normality is a measure of concentration equal to the gram equivalent weight per liter of solution. Gram equivalent weight is the measure of the reactive capacity of a molecule. The solute's role in the reaction determines the solution's normality. Normality is also known as the equivalent concentration of a solution.

Normality Equation

Normality (N) is the molar concentration ci divided by an equivalence factor feq: N = ci/ feq

Another common equation is normality (N) equal to the gram equivalent weight divided by liters of solution:

N = gram equivalent weight / liters of solution (often expressed in g/L)

or it may be the molarity multiplied by the number of equivalents:

N = molarity x equivalents

The normality of Na2CO3 is 0.5 N which means that its Molarity = 1.0M and its equivalents is 0.5. Its ci = 1M and its feq = 2. It further means that the gram equivalent weight = 106 g dissolved in 1 liter of water.It is also equal to 53 g dissolved in 500 mL of water.

It neutralizes 20 mL of 0.04 N of HCl. The gram equivalent of 0.04 N HCl is1.46 g.

Therefore the volume of 0.5 N of Na2CO3 is 500 mL or one-half liter.