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

Balance the following equation that represents a combustion , C2H5OH -> CO2...

C2H5OH -> CO2(g) + H2O(g)

#title.introduction to organic and inorganic chemistry, #question:although ...

#question:although CO is well known,why doesn''t SiO exist under normal conditions?

Bohr''s theory, advantage of his theory?

advantage of his theory?

Nitrenes, tell me the methods of preparation of nitrenes?

tell me the methods of preparation of nitrenes?

Microstates inorganic chemistry, d 5

d 5

Calculate the ethanol in a light lage, 20.0 mL of 0.2 M CaCl 2 diluted wit...

20.0 mL of 0.2 M CaCl 2 diluted with water to 100.0 mL. Calculate [CaCl 2 ], [Ca 2+ ] and [Cl - ]. Produce from concentrated hydrochloric acid (12 M) 3.0 L 0.60 M HCl solution.

Mesomeric effect, What is +M and -M effect?

What is +M and -M effect?

Write the cell reactions which occur in lead storage battery, Taking a spec...

Taking a specific example show that AS total is a criterion for spontaneity of a change. Write the cell reactions which occur in lead storage battery (i) when the battery is

The set of quantum numbers & belongs to the element, The set of quantum num...

The set of quantum numbers n= 3, l=0, m=0, s= -1/2 belongs to the element: (1) Mg                   (2) Na        (3) Ne                (4) F Ans: Mg

Potentiometry, Lab Report Report the mass of KCl and KI in the original unk...

Lab Report Report the mass of KCl and KI in the original unknown sample. Include plot of titration. How do I calculate amount in unknown from titration and what is the curve suppos

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