User Account

All Pages

titration help, Chemistry

Assignment Help:
During a titration with EDTA, using eriochrome black T as indicator to determine Ca
2+
, an
analyst obtained the following volumes of EDTA in three different trials: 5.01, 4.93 and 4.98
mL. What is the Ca
2+
concentration (mol/L) in this sample if the concentration of the EDTA
standard used was 0.035 mol/L, and the volume of sample titrated was 20.00 mL?
2) Considering the same type of experiment described in the previous question, calculate the
Ca
2+
concentration in a sample which consumes 20.05, 19.96 and 20.03 mL of a 0.0084 mol/L
EDTA solution in three different trials. In this case, the sample volume used was 15.00 mL.
3) What is the CaCO3 mass percentage in a seashell sample presenting 0.0158 g of this
compound for an initial sample mass of 0.0165 g?
Do not forget to report the correct number of significant figures. You may also want to use
the following equation in exercises 1 and 2: n = M x V, where n is the number of mols, M is
the molarity in mol/L, and V is the volume in L.

Related Discussions:- titration help

Organic chemistry, tests for the presence of iodoform

tests for the presence of iodoform

Freons, Which is a better coolant, Freon 11 or Freon 12? why?

Which is a better coolant, Freon 11 or Freon 12? why?

Thermodynamics, What are the limitations of second law of thermodynamics?

What are the limitations of second law of thermodynamics?

Inductive effect, Why inductive effect is compared with hydrogen?

Why inductive effect is compared with hydrogen?

Salt analysis., CAN I PLEASE GET A SALT ANALYSIS CHART FOR MY CHEMISTRY PRA...

CAN I PLEASE GET A SALT ANALYSIS CHART FOR MY CHEMISTRY PRACTICALS?

Shiff base, i am synthesing the azipines and i wana to fet the azipine with...

i am synthesing the azipines and i wana to fet the azipine with different subsituites. how can i get with triflouro subsituited azipines?

Chemicals in medicines, Conclusion for chemicals used in medicines

Conclusion for chemicals used in medicines

Which of the following electronic configuration, Which of the following ele...

Which of the following electronic configuration is not possible: (1)  1s 2 2s 2                           (2)  1s 2 2s 2   2p6                   (3) [Ar]3d 10 4s 2 4

Nomenclature of spiro compounds, Nomenclature of spiro compounds Compou...

Nomenclature of spiro compounds Compounds where one carbon atom is common to two dissimilar rings are known as spiro compounds. The IUPAC or International Union of Pure and App

Compute the blood volume within the body of horse, Compute the blood volume...

Compute the blood volume within the body of horse: Problem: A 0.6 cm 3 solution containing 7.5 µCi /cm 3 of 59 Fe was injected into the blood stream of a horse After e

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd