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

Cycloalkanes, Why cyclo propane is more stable than cyclohexane

Why cyclo propane is more stable than cyclohexane

Laws of chemical combination, meaning of laws of chemical

meaning of laws of chemical

Define elements and compounds, Q. Define Elements and Compounds? Pure s...

Q. Define Elements and Compounds? Pure substances are categorized into two categories that are elements and compounds. An element is a substance that can't be separated into

Explain triene-triol isomer, This compound, 1,3,5-cyclohexanetrione, exists...

This compound, 1,3,5-cyclohexanetrione, exists as its "triene-triol" isomer phloroglucinol because the latter is aroma

EBT, WHAT IS EBT

WHAT IS EBT

General chemistry, name the compound LiH

name the compound LiH

General anesthetics - drugs and medicines, General Anesthetics: Genera...

General Anesthetics: General Anesthetics depress the central nervous system to like an extent that all sensitivity to pain or feeling is gone, that is they make unconsciousnes

Degree of unsaturation procedure, what is the procedure on how to get degre...

what is the procedure on how to get degree of unsaturation in a fruit

Number of nodal planes in a px, The number of nodal planes in a Px is: ...

The number of nodal planes in a Px is: (1) One        (2) Two             (3) Three             (4) Zero Ans:  One

Minimum reflux ratio for the separation, Crude oil is separated into severa...

Crude oil is separated into several fractions, each of these fractions are composed of many undefined hydrocarbon components. For simplicity, the crude oil is assumed to be a mixtu

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