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

Proton neutron hypothesis, proton neutron hypothesis

proton neutron hypothesis

Show the factors affecting equilibrium position, Q. Show the Factors Affect...

Q. Show the Factors Affecting Equilibrium Position? Ans. The term equilibrium position refers to the relative proportions of reactants and products in the equilibrium mixt

Periodic table, Explain variations of electronegativity in group & period

Explain variations of electronegativity in group & period

Define priming and foaming, # ?????? ..

# ?????? ..

Melting point - physical charterstics of monocarboxylic acid, Melting point...

Melting point - physical charterstics of monocarboxylic acids (a) The melting points of carboxylic acids do not change smoothly from one member to other member. (b) The melt

What is a mixture experiment, Q. What is a mixture experiment? Mixture ...

Q. What is a mixture experiment? Mixture experiment is an experiment in which food quality indices are assured to depend on the relative proportion of ingredients.

Reactions of dihydric alcohol, what are the reactions of dihydric alcohol?

what are the reactions of dihydric alcohol?

Ligand field theory, LIGAND FIELD THEORY The five d orbitals with dist...

LIGAND FIELD THEORY The five d orbitals with distinct values of the magnetic quantum number (m) have the similar energy in a free atom or ion. In any compound they interact

Antifertility drugs, what are antifertility drugs?

what are antifertility drugs?

Carbon, CARBON, SILICON AND GERMANIUM With the valence electron configur...

CARBON, SILICON AND GERMANIUM With the valence electron configuration s 2 p 2 the nonmetallic group of elements 14 may form compounds with four tetrahedrally directed covalent

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