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

Inorganic salt analysis of greenish white, which kind Acid &Basic radical p...

which kind Acid &Basic radical present in this?

#title.chm 102., structure of 2-ethylbutanoic acid

structure of 2-ethylbutanoic acid

Inorganic chemistry, what is dilution process?

what is dilution process?

Transfer of electrons from lower to higher energy levels, The electrons  wo...

The electrons  would go to lower energy levels first and then to higher energy levels according to which of the following: (1) Aufbau principle (2) Pauli's exclusion princip

Molecules, A hypothetical molecule, X–Y, has a dipole moment of 1.48 D and ...

A hypothetical molecule, X–Y, has a dipole moment of 1.48 D and a bond length of 161 pm. Calculate the percent ionic character of this molecule

#chemical thermodynamics, give an example of a compound whose empirical for...

give an example of a compound whose empirical formula & molecular formula are same.

Proteins, determination of proteins in flour sample

determination of proteins in flour sample

ANALYSIS METHOD, CALCIUM CARBONATE TEST METHOD

CALCIUM CARBONATE TEST METHOD

PH, what is pH value?

what is pH value?

Organic spectroscopy, what is cut off point of a solvent?

what is cut off point of a solvent?

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