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

Explain the term production, Production Sensory analysis does not stop...

Production Sensory analysis does not stop after the  product has been developed and is being produced routinely. However, it is critical that products continue to be analyzed

Pauli''s exclusion principle, Pauli's exclusion principle states that : ...

Pauli's exclusion principle states that : (1) Nucleus of an atom contains no negative charge   (2) Electrons move in circular orbits around the nucleus   (3) Electrons oc

Diagonol relationship, What is difference between aluminium and beryllium?

What is difference between aluminium and beryllium?

Pancake, are you a pancake

are you a pancake

Hydrolysis of ester, Hydrolysis of an ester into acid and alcohol can be do...

Hydrolysis of an ester into acid and alcohol can be done by acid or alkali. which is the best method and why?

Soya milk, quality of soya milk

quality of soya milk

Bohr''s theory, advantage of his theory?

advantage of his theory?

Uuu, what is p block element

what is p block element

Binary compounds: simple structures, Coordination number and geometry ...

Coordination number and geometry   Binary compounds are ones with two different elements present. 'Simple' crystal structures can be classed as ones in which each atom (or

Conversion of caco3 equivalent, Q.   A sample of water analysis was found t...

Q.   A sample of water analysis was found to contain temporary magnesium hardness 25 mg/L. Permanent magnesium chloride hardness 15 mg/L and permanent calcium sulphate hardness 20

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