State what is the concentration of the hno3 solution

Reference no: EM13168651

In a titration of HNO3, you add a few drops of phenolphthalein indicatior to 50.00 mL of acid in a flask. You quickly add 20.00 mL of 0.143 M NaOH but overshoot the end point, and the solution turns deep pink. Instead of starting over, you add 30.00 mL of the acid, and the solution turns colorless. Then, it takes 4.50 mL of the NaOH to reach the endpoint. What is the concentration of the HNO3 solution?

Reference no: EM13168651

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