Inorganic Chemistry Answers

An oxide of nitrogen contains 63.1% oxygen and has a molar mass of 76.0 g/mol. What is the empirical

formula for this compound?

According to the acid-base titration curve given in the figure, why the curve at half equivalance point is flat?

a.)Due to the buffering capacity of weak acid-conjugate base

b.)Since,pH at half equivalance point is 7.

c.)Because concentration of titrant NaOH is not low.

d.)Since, Ka<10^-4 and assumptions do not work

e.)Since HA concentration is <10^-6 M and proton source from water becomes significant.

How do you prepare 200 ml 0.05 CuCl2 solution from 0.1 M CuCl2 stock solution?

a.)Transferring 500 ml from 0.1 M stock solution to 200 ml volumetric flask and adding water until mark

b.)Transferring 100 ml from 0.05 M stock solution to 200 ml volumetric flask and adding water until mark

c.)Transferring 100 ml from 0.1 M stock solution to 200 ml volumetric flask and adding water until mark

d.)Transferring 100 ml from 0.1 M stock solution to 200 ml volumetric flask and adding 100 ml water

What is the pH of 0.12 M NH3?

a.)6.88

b.)1.85

c.)7.88

d.)8.88

e.)12.16

What is the pH in titration of 100 ml 0.1 M benzoic acid with 0.02 M NaOH at half equivalance point?

a.)4.2

b.)9.8

c.)3.24

d.)7

What are analytical and equilibrium concentration of 0.1 M acetic acid, respectively?

a.) 0.1 M, 1.35x10^-3

b.)0.1 M, 0.097 M

c.)0.097 M, 0.097 M

d.)0.097 M, 0.01 M

Good afternoon

My question is:

Consider the four ions C₂, C₂ ²⁺, C₂ ⁺ and C₂ ^2- . Using an argument based on The Molecular Orbital Theory

a) Rank the species in order of decreasing bond dissociation energy. SHOW ALL CALCULATIONS

b)Which of these species would you expect to be paramagnetic or diamagnetic? Illustrate your answers with suitable MO diagrams

Draw a unit cell of MC as calcium oxide structure

 What is the [A^-] when 50 ml of 0.1 M NaOH is added to the  100 ml solution mixture which is in 0.1 M HCl and 0.1 M acetic acid? (K_a =1.75*10^-5)

a. 6.7*10-3M

b. 1.32x10-3 M

c. 3.6*10-6

d. 0.067 M

e. 0.33 M

 What is the [A^-] when 50 ml of 0.1 M NaOH is added to the  100 ml solution mixture which is in 0.1 M HCl and 0.1 M acetic acid? (K_a =1.75*10^-5)

a. 6.7*10-3M

b. 1.32x10-3 M

c. 3.6*10-6

d. 0.067 M

e. 0.33 M