Consider the titration of carbonic acid (H2CO3; Ka1 = 4.3 x 10^-7; Ka2 = 4.7 x 10^-11) with NaOH. Calculate the pH at each half-equivalence point and at the first equivalence point. How to calculate molarity of HCl from titration Consider the titration of 40.0 mL of 0.250 M HF ...
In a triprotic acid, which Ka has the highest value? a. Ka1 b. Ka2 c. Ka3 d. all Ka have the same value Write the chemical equations for the stepwise ionization of oxalic acid, (COOH)2, a diprotic acid. In titration of a weak base with strong acid...
the best moves are those that: a) run with the king from the original square; b) create one or more squares for the king to evade to and c) give check to the white king. Once you have properly identified these Black moves, you should look how White...
When you find something very similar to your invention, you should__. A. find something to prove that your invention is original by yourself B. ask for professional help C. negotiate with the inventor of the similar invention D. give up the application of patent for your invention 查...
How to Prevent Grasshopper Raids
You have to find the move 37...♜e7! The knight is badly pinned and after 38.♖e4, Surya got his queen to d5 with 38...♛d5. Black was completely winning and Wang Hao threw in the towel.Wang,Hao (2725) - Ganguly,Surya Shekhar (2638), Belt and Road Hunan Op A Changsha...
Water fills all the air spaces between the soil particles and this prevents oxygen from reaching the roots. In turn, this causes the soil to stagnate and prevents root growth.If plants look a bit sickly after a week or two of solid rain the minerals may have been washed away. Restore ...
Why is the concentration of a solution such as NaH2PO4 ignored when calculating the pH given Ka1, Ka2, and K3 values? The pH at the half-equivalence point in an acid-base titration was found to be 5.32. What is the value of Ka for the acid?Explore...
H3PO4 has three acidic protons with the following Ka values: Ka1 = 7.1 x 10^{-3} Ka2 = 6.3 x 10^{-8} Ka3 = 4.5 x 10^{-13} If you have this acid in a solution with a pH=5 what is the predominate form of the compound in solution?
19...Rg8 20.Ne2 a5 Position remains balanced 20.a4 Na7 20...b4 21.Ne2 Kc7 22.Rc1 21.axb5 axb5 22.Ka2?! I failed to understand purpose of this move. Probably white wants to remove the knight from b3 and then put his king on b3? I am not sure but it looks vague and imp...