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

There is no difference between a2p and a 3p orbital, There is no differe...

There is no difference between a2p and a 3p  orbital regarding: (1) Shape (2)Size (3)Energy (4) Value of Ans: Shape

The azimuthal quantum number has a value, When the azimuthal quantum number...

When the azimuthal quantum number has a value of l=0 , the shape of the orbital is: (1) Rectangular (2)Spherical (3)Dumbbell (4)Unsymmetrical Ans: Spherical

Hydrocarbons, EXPLAIN THE DIFFERENTIATION OF AROMATIC HYDROCARBONS CYCLOHEX...

EXPLAIN THE DIFFERENTIATION OF AROMATIC HYDROCARBONS CYCLOHEXANE AND CYCLOHEXENE

In covalency, In covalency : (1) Electrons are transferred (2) Elect...

In covalency : (1) Electrons are transferred (2) Electrons are equally shared (3) The electron of one atom are shared between two atoms (4) None of the above Ans: E

Potentio meter, hoe to calibrate potentio meter in lab ?

hoe to calibrate potentio meter in lab ?

Thermodynamics., its important topics for class 11th

its important topics for class 11th

Organic chemistry-electrometric effect, give one book name about electromat...

give one book name about electromatric effect?&author name?

Thermodynamics, Calculate the total heat (in J) needed to convert .777 mole...

Calculate the total heat (in J) needed to convert .777 moles of gaseous ethanol at 300 degrees C and 1 atm to liquid ethanol at 25 degrees C and 1 atm. Extra info: b.p. 78.5 degree

Characteristic flame colour - chemical analysis, Characteristic flame colou...

Characteristic flame colour: specific metals and their salts impart particular colours to Bunsen burner flame.         (1)  Pb (plumbum) impart pale greenish colour to the f

Conversion, convert n-propyl alcohol to iso propyl alcohol

convert n-propyl alcohol to iso propyl alcohol

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