Wednesday, March 23, 2016
Monday, March 14, 2016
Question on Units
Which one of the following relationships is wrong?
(i) \(1000 cm^3 = 1dm^3\)
(ii)\(10^{-21} m = 1zepto metre\)
(iii) \(25^OC = 273K = 77^OF\)
Question on Leaving Group Ability
Among \(NH_3\) and \(H_2O\) which one is a better leaving group than the other? Why?
Sunday, March 13, 2016
This is how to find the hybridization, geometry and shape of a...
This is how to find the hybridization, geometry and shape of a molecule or an ion from the molecular formula.
Saturday, March 12, 2016
Tuesday, March 8, 2016
Question on Stoichiometry
How many moles of \(KMnO_4\) will be reduced by HCN in acidic medium if HCN completely converts to carbondioxide (\(CO_2\)) and nitrate ion (\(NO^-_3\))?
Question on Ionic Equilibrium
A student dissolved a certain amount of a weak acid (HA) in some water. She then titrated this solution against NaOH of some unknown concentration. When she had added 5mL of NaOH the pH of the solution was found to be 5. It took a total of 20mL of NaOH to completely neutralize the acid solution she had prepared. What is the acid dissociation constant (\(K_a\)) of the weak acid, HA?