Explain how many moles of naoh were in excess

Reference no: EM13154048

In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 20.75 mL of 0.0502 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 3.82 mL of the NaOH to reach the end point. (a) What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?

Reference no: EM13154048

Questions Cloud

How p-value helps to decide to-not to reject null hypothesis : What is a p-value in testing hypothesis? How does this p-value help us to decide to/not to reject a Null hypothesis?

How many moles of na+ are in 1.00l of the saline solution : A physiological saline solution contains 154 mEq/L each of Na+ and Cl-. How many moles of Na+ are in 1.00L of the saline solution?

Spacely sprockets'' short-run cost : Spacely Sprockets' short-run cost curve is: C(q, K) = + 15K, where q is the number of Sprockets produced and K is the number of robot hours Spacely hires.

Restrictions on beta ability to use minimum tax credit : Beta Corporation incurs a $60,000 regular tax liability and a $20,000 AMT liability. Assuming no restrictions on Beta's ability to use the minimum tax credit, what journal entry would be necessary to record tax expense?

Explain how many moles of naoh were in excess : What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?

How many kilocal are required to increase the temperature : How many kilocal are required to increase the temperature of 15.6 g of iron from 122 °C to 355°C? The specific heat of iron is 0.450 J/g °C.

America''s 12-year great depression : Eighty five years ago, America's 12-year Great Depression began with a crash. The bottom fell out of the stock market on October 24, 1929, signaling the start of the longest and deepest economic decline in the nation's history. Could the crash happen..

What is the density of hydrogen gas at stp? : The mass of 322 mL of hydrogen gas at 4.0 atm and -73°C is 1.21 grams. What is the density of hydrogen gas at STP?

Classify the substances according to the strongest solute : Classify the substances according to the strongest solute-solvent interaction that will occur between the given substances and water during dissolution

User Account

All Pages