chem

posted by .

calculate the concentration of borate ion for a titration when 6.0998g borax is dissolved in 100mL of water and titrated with 25.5mL of HCl

• chem -

mols borax = grams/molar mass Na2B4O7*10H2O
mols borate ion = 2x that
M borate ion = mols/0.125L = ?

• chem -

Here is a link that gives the titration details.
http://en.wikipedia.org/wiki/Borax

Similar Questions

1. chemistry

Hi! i'm kinda having trouble getting this.. Don't understand it really from Ca(OH)2 + 2HCl-----> CaCl2 + 2H2O How do i calculate Ca+?
2. Chemistry - Acid Base Titration

When you complete a acid base titration of NaOH and HCl and how to you find the molarity/concentration of HCl. I used 9 mL of HCl with 50 mL of water. But when solving for concentration, do I use 9 mL or 59 mL (water + HCl)?
3. chemistry

how would i do something like this? Calculate the concentration of borate ion for each titration. Use the borate ion concentration to determine Ksp at each temperature.
4. chemistry

A student prepared 5.00 mL of borax solution at 59.2 C. He diluted the solution in a flask and titrated it to an endpoint with 27.05 mL of 0.500 M HCl. What is the saturation concentration of borate ions?
5. Chem 1A

A 15.00 g sample of an ionic compound NaA, where A- is the anion of a weak acid, was dissolved in enough water to make 100.0 mL of solution and was then titrated with 0.100 M HCl. After 700.0 mL of HCl was added, the pH was 5.00. The …
6. chemistry

Bill prepared 5.00-mL of borax solution at 59.2degrees C. He diluted the solution in an Erlenmeyer flask and titrated it to an endpoint with 27.05 mL of 0.500 M HCl. What is the saturation concentration of borate ions?
7. chemistry

CH3NH2(aq)+H2O(l)=>CH3NH3+(aq)+OH-(aq) Kb=4.4 x 10^-4 Methylamine, CH3NH2, is a weak base that reacts with water according to the equation above. A student obtains a 50.0 mL sample of a methylamine solution and determines the pH …
8. AP Chemistry

CH3NH2(aq)+H2O(l)=>CH3NH3+(aq)+OH-(aq) Kb=4.4 x 10^-4 Methylamine, CH3NH2, is a weak base that reacts with water according to the equation above. A student obtains a 50.0 mL sample of a methylamine solution and determines the pH …
9. Chemistry - Solubility

Given: Concentration of HCl is 0.1388M 0.5 g of Ca(OH)2 was placed in a flask. 100mL of 0.05M NaOH was poured into the flask. 25mL aliquot was filtrated and used for titration. Suppose to calculate the OH^- equilibrium concentration …
10. chemistry

1. In the Thermodynamics of Borax Dissolution experiment, a student quickly transferred a 5.00 mL sample of the saturated borax solution into an Erlenmyer flasks using a pipet and pipet pump after the borax solution had cooled to 35oC. …

More Similar Questions