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- ammine, can we reduce r-cn to primary ammines using fe/hcl

can we reduce r-cn to primary ammines using fe/hcl

Glutamic acid standard protocol, glutamic acid standard estimation protocol...

glutamic acid standard estimation protocol

Homocyclic or carbocyclic - closed chain compounds, Homocyclic or Carbocycl...

Homocyclic or Carbocyclic - Closed Chain Compounds Homocyclic are the compounds that comprising a ring or rings of carbon atoms just only in the molecule. The homocyclic or c

Vsepr theory, structure of H20

structure of H20

Show various methods of blanching for the vegetables, Q. Show various metho...

Q. Show various methods of blanching for the vegetables? To carry out various methods of blanching for the given vegetables. • carry out various methods of blanching, and

Explain in brief about the wire drawing, Explain in brief about the Wire dr...

Explain in brief about the Wire drawing Drawing: Refers to shaping in a punch press of flat blanks of sheet metal into different shapes. This process is fundamentally forcing

Solutions (class 12), complete discription of van''t hoff factor

complete discription of van''t hoff factor

A moving particle may have wave motion, A moving particle may have wave mot...

A moving particle may have wave motion, if: (1) Its mass is very high (2) Its velocity is negligible (3) Its mass is negligible (4) Its mass is very high and velocity

Lanthanum and the lanthanides, LANTHANUM AND THE LANTHANIDES   The ...

LANTHANUM AND THE LANTHANIDES   The lanthanides are 14 components following lanthanum in the periodic table, and associated with the filling of the seven orbitals of the

Energy of orbit, Energy of orbit: (1) Increases as we move away from nu...

Energy of orbit: (1) Increases as we move away from nucleus   (2) Decreases as we move away from nucleus  (3) Remains same as we move away from nucleus  (4)None of the

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