Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A mixture of Mn2+, Mg2+ and Zn2+ was analyzed as follows: The 25000 mL sample was treated with 0.25 g of NH3OH+Cl- (hydroxylammonium cgloride, a reducing agent that maintains manganese in the +2 state), 10 mL of ammonia buffer (pH 10), and a few drops of erichrome black T indicator and then duluted to 100 mL. It was warmed to 40C and titrated with 39.98 mL of 0.04500 M EDTA complex. The liberated EDTA required 10.26 mL of standard 0.20 65 M Mn2+ for complete titration. After this second end point was reached, 5 mL of 15 wt% aqueous KCN was added to displace Zn 2+ from its EDTA complex. This time the liberated EDTA required 15.47 mL of standard 0.020 65 M Mn2+. Calculate the number of miligrams of each metal (Mn2+, Zn2+, and Mg 2+) in the 25.00 mL sample of unknown.
Explain the impact of ionic size on the activity coefficient of a species. 1) give the correct trend. 2) give a complete mathematical explanation, 3) give a conceptual explanation.
For a van der Waals gas, use the thermodynamic equation of state to find [dU/ dV]T. Compare your result to the corresponding value of the same derivative for an ideal gas. Explain the difference.
Problem- 325 mL of 0.05 M H2SO4 is titrated with 1.5 M NaOH solution. What is the minimum volume of NaOH necessary to neutralize the acid
a green leaf has a surface area of 2.10 rm cm2. if solar radiation is 1030 rm wm2 how many photons strike the leaf
At a certain temperature, reaction has equilibrium constant (Kc) of 1.9 x10^19. Determine the equlibrium constant for the reaction based on this information at the same temperature.
If the heat capacity of the calorimeter was 25 J/C, what would the change in enthalpy (delta H rxn) for this reaction be
If the titrant has a molarity of 0.2750 M and there are 5.00 mL of analyte present, what is the molarity of the analyte
Consider the titration of 80.0ml of 0.100M Ba(OH02 by 0.400 M HCl. Calculate pH of the resulting solution after 20.0mL of HCl is added.
Problem- If the structure is square planar, how many geometric isomers are possible for the complex ion. What are they
Propose a reasonable reaction mechanism for the sodium hypochlorite oxidation of 3-heptanol. Give the IUPAC name of the expected product
Hydrogen gas (2g) is aded to a 10L rigid vessel at 298K containing 4g of He gas. What is the new pressure within the vessel
Calculate how many kilojoules of energy are released when 27.86g of butane are burned.
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd