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

#title organic chemistry, how many isomers does butane have

how many isomers does butane have

Draw a typical triglyceride, Draw a  typical triglyceride and name its bui...

Draw a  typical triglyceride and name its building blocks. Mark centres of chirality.   The reaction cascade exact to fatty acid degradation is called "β-oxidation". It take

How to define fast reactions, Fast reactions are those reactions that occur...

Fast reactions are those reactions that occur instantaneously. A fast reaction depends upon the reaction rates. These reactions are so fast that they occur as soon as the reactants

Fine grain sizes are obtained, Fine grain sizes are obtained by slow c...

Fine grain sizes are obtained by slow cooling

Diffusion and osmosis, defference between diffusion and osmosis

defference between diffusion and osmosis

Classification of proteins - simple proteins, Simple proteins Simple pr...

Simple proteins Simple proteins are made up of chains of amino acid units just joined by peptide linkages. These types of proteins on hydrolysis yield just only mixture of amin

Symmetry operations, what are the symmetry operations of N2O5 and C2H2

what are the symmetry operations of N2O5 and C2H2

Law of chemical combination, what are the tree laws of chemical reaction

what are the tree laws of chemical reaction

Hookes law simulation, Hookes Law simulation Using a horizontal and a v...

Hookes Law simulation Using a horizontal and a vertical spring that this applet simulates Hooke's law and easy harmonic motion. As discussed previously, the amount of stretchin

Biochemisty, what r identification tests for lipids which involve water in ...

what r identification tests for lipids which involve water in their tests n their biological use in human body

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