Question

if 20 drops of pyruvic acid (HC3H3O3) are titrated with 40 drops of 0.35 M NaOH what is thr molar concentration of the pyruvic acid soluation

Answer 1

To find the molar concentration of the pyruvic acid solution, we can use the balanced equation of the reaction between pyruvic acid (HC3H3O3) and sodium hydroxide (NaOH): we find the molar concentration of the pyruvic acid solution is 0.0007 mol/L.

Step-by-step explanation:

To find the molar concentration of the pyruvic acid solution, we can use the balanced equation of the reaction between pyruvic acid (HC3H3O3) and sodium hydroxide (NaOH):

HC3H3O3 + NaOH → NaC3H3O3 + H2O

From the equation, we can see that the ratio of pyruvic acid to sodium hydroxide is 1:1. Therefore, if 20 drops of pyruvic acid are titrated with 40 drops of 0.35 M NaOH, the molar concentration of the pyruvic acid solution can be calculated as follows:

1. 
   
3. Convert the volume of NaOH solution to liters: 40 drops × (1 mL / 20 drops) × (1 L / 1000 mL) = 0.002 L
4. 
   
6. Calculate the number of moles of NaOH: 0.002 L × 0.35 mol/L = 0.0007 mol
7. 
   
9. Since the ratio of NaOH to pyruvic acid is 1:1, the molar concentration of pyruvic acid is also 0.0007 mol/L.