Question

If   14.99 mL of NaOH are required to titrate 15.00 mL of a   0.46 M oxalic acid solution,...

If   14.99 mL of NaOH are required to titrate 15.00 mL of a   0.46 M oxalic acid solution, what is the concentration of the NaOH?

A solution of a theoretical triprotic acid was prepared by dissolving 4.980 g of solid in enough DI water to make 500.0 mL of solution.   10.10 mL of a 0.448 M solution was required to titrate 20.00 mL of this acid's solution.

1. What is the concentration of the acid solution?

2.

What is the molar mass of the acid?

Hint: You need to calculate the total moles in the 500.0 mL solution (the full 500.0 mL was NOT titrated).

Homework Answers

Answer #1

2 NaOH + H2C2O4 ----> C2O4Na2 + 2H2O

n1 = 2 mole NaOH , n2 = 1 mole H2C2O4

M1V1/n1 = M2V2/n2

14.99*M1/2 = 0.46*15/1

M1 = molarity of NaOH = 0.921 M


3 NaOH + H3X ----> Na3X + 3H2O

n1 = 3 mole NaOH , n2 = 1 mole H3X

M1V1/n1 = M2V2/n2

10.10*0.448/3 = M2*20/1

M2 = molarity of H3X = 0.0754 M

Molarity = n/V

n = M2*V in L   = 0.0754*0.5 = 0.0377 mole

nO of moles of acid = wt/mwt

0.0377 = 4.98/mwt

Mwt of acid   = 4.98/0.0377 = 132.1 g/mol

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
CHEMISTRY! A solution of a triprotic acid is prepared by dissolving 6.088 g of the solid...
CHEMISTRY! A solution of a triprotic acid is prepared by dissolving 6.088 g of the solid acid in sufficient DI water to make 400.00 mL of solution.   18.36 mL of a 0.1745 M NaOH solution are required to neutralize 10.00 mL of this acid solution? A) What is the concentration of the acid solution? B) What is the molar mass of the acid? NOTE: this was the response to my answer -> .961146 This would be correct for a monoprotic...
If 38.17 mL of 0.1072 M NaOH is required to titrate a 15.00 mL sample of...
If 38.17 mL of 0.1072 M NaOH is required to titrate a 15.00 mL sample of sulfuric acid, what is the molarity of the acid?
A solution of a theoretical triprotic acid was prepared by dissolving 4.037 g of solid in...
A solution of a theoretical triprotic acid was prepared by dissolving 4.037 g of solid in enough DI water to make 500.0 mL of solution.   10.11 mL of a 0.592 M solution was required to titrate 20.00 mL of this acid's solution. Part A What is the concentration of the acid solution? Part B What is the molar mass of the acid? Hint: You need to calculate the total moles in the 500.0 mL solution (the full 500.0 mL was...
A student required 26.42 mL of 0.1013 M NaOH solution to titrate 0.154 grams of a...
A student required 26.42 mL of 0.1013 M NaOH solution to titrate 0.154 grams of a solid triprotic acid to the phenolphthalein end point. Assuming she did her calcilations correctly, what did she report as the molar mass of her acid? (Please show all work as clear as possible) (refer to the balanced molecular equation)
A student required 26.42 mL of 0.1013 M NaOH solution to titrate 0.154 grams of a...
A student required 26.42 mL of 0.1013 M NaOH solution to titrate 0.154 grams of a solid triprotic acid to the phenolphthalein end point. Assuming she did her calcilations correctly, what did she report as the molar mass of her acid Assuming you have the answer to this^ , please answer this Q: The student later realized that she had read her buret incorrectly. The volume of the NaOH solution was actually 23.58 mL that she used. What kind of...
1) A 21.30 mL volume of 0.0975 M NaOH was used to titrate 25.0 mL of...
1) A 21.30 mL volume of 0.0975 M NaOH was used to titrate 25.0 mL of a weak monoprotic acid solution to the stoichiometric point. Determine the molar concentration of the weak acid solution. 2.08 M 0.114 M 0.0831 M 0.00390 M 2.44 M 2) For a weak acid (CH3COOH) that is titrated with a strong base (NaOH), what species (ions/molecules) are present in the solution at the stoichiometric point? CH3COO- H2O Na+ NaCl HCl
In titrating an acid of unknown concentration, a 20.00 mL sample of the acid was titrated...
In titrating an acid of unknown concentration, a 20.00 mL sample of the acid was titrated using standardized sodium hydroxide. The NaOH had a concentration of 0.1105 M. The titration required 35.45 mL of the base to reach the end-point in the titration. a) How many moles of H+ was in the 20.00 mL sample of acid? b) The solution of acid was prepared by adding 9.605 grams of the acid to 1.000 liter of water. What was the molecular...
A 20.00-mL sample of formic acid (HCO2H) is titrated with a 0.100 M solution of NaOH....
A 20.00-mL sample of formic acid (HCO2H) is titrated with a 0.100 M solution of NaOH. To reach the endpoint of the titration, 30.00 mL of NaOH solution is required. Ka = 1.8 x 10-4 What is the concentration of formic acid in the original solution? What is the pH of the formic acid solution before the titration begins (before the addition of any NaOH)?
A solution of an unknown acid is prepared by dissolving 5.573 g of the solid acid...
A solution of an unknown acid is prepared by dissolving 5.573 g of the solid acid in sufficient DI water to make 300.00 mL of solution 19.92 mL of a 0.1253 M NaOH solution are required to neutralize 10.00 mL of this acid solution? What is the equivalent molar mass of the acid?
Oxalic acid (H2C2O4) is a diprotic acid. How many milliliters of 0.1897 M NaOH is required...
Oxalic acid (H2C2O4) is a diprotic acid. How many milliliters of 0.1897 M NaOH is required to neutralize 0.3442 L of 0.2456 M oxalic acid? [Hint: 2 moles of NaOH would react with 1 mole of oxalic acid.]
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • Although aging and death are realities that all individuals have to deal with at some point...
    asked 2 minutes ago
  • Implement the following functions with AVR assembly language 1) 2-byte addition (i.e, addition on 16-bit numbers)...
    asked 11 minutes ago
  • Assume you have a chemical compound (HA) that is a weak acid which changes color upon...
    asked 40 minutes ago
  • A company has two divisions. The first division consists of project management and generated $4,523,367 of...
    asked 41 minutes ago
  • Practice Quiz 1 Use the following information to answer questions 1 through 5.                              &
    asked 47 minutes ago
  • 3) The corrosion of iron is an electrochemical process that involves the standard reduction potentials given...
    asked 1 hour ago
  • Type or paste question here In 2015, the United States is still recovering from the recession....
    asked 1 hour ago
  • Failures of a critical machine part due to cyclical vibration has a gamma distribution with a...
    asked 1 hour ago
  • f(x)=ln(1+2x), a=4,n=3,3.7<=x<=4.3 (b) Use Taylor's Inequality to estimate the accuracy of the approximation f  Tn(x) when x...
    asked 1 hour ago
  • What is the meaning of convergent and divergent series? Explain your answer with example.
    asked 1 hour ago
  • Based on what you have learned in the textbook about feminism, discuss the approach by the...
    asked 2 hours ago
  • what is typeMismatch.java.time.LocalTime,typemismatch error and how can I solve it? could it be of the local...
    asked 3 hours ago