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Consider 1:1 stoichiometric polymerisation of 1, 4-diaminobutane with sebacoyl chloride.
(a) Write down a balanced chemical equation for the polymerization
(b) Name the polymer formed by this polymerization.
(c) Calculate the extent of reaction required to produce this polymer with a number-average molar mass of 8000.
(d) What would happen if you included 1, 1, 4, 4-tetraaminobutane in the polymerisation so that the stoichiometric ratio was 1:2:4 tetra aminobutane: diaminobutane: sebacoyl chloride?
You make up 0.100 L of a buffer having 1.00 M acetic acid and 1.10 M sodium acetate. The Ka of acetic acid is 1.8 x 10-4. (a) Determine the pH of this buffer.
Reactions of Alkaline earth metals with oxygen: Write the reactions of any two elements of group II A with oxygen. Ans. Alkaline earth metals react with oxygen to form corr
The atomic number of an element having the valency shell electronic configuration 4s 2 4p 6 is: (1) 35 (2) 36 (3) 37 (4) 38 Ans: 35
Define Colligative Properties of A Dilute Solution? The colligative properties of a solution are usually considered to be: 1. Freezing-point depression: the decrease in the
Q. Show the electromagnetic radiation in spectrochemical series? The spectrochemical series can sometimes be helpful in making certain prediction about the complex. For instanc
The sulphate of a metal has the formula M 2 (SO 4 ) 3 . The formula for its phosphate will be: (1) M(HPO 4 ) 2 (2) M 3 (PO
Sn + No3- ------- Sno2 + No2
Given the following mass percent compositions, determine the empirical formula: 49.5% C; 5.2% H; 28.8% N; 16.5% O.
The atomic number of an element is 17. The number of orbitals containing electron pairs in its valence shell is: (1) Eight (2) Six (3) Three
Write an equation that shows the formation of the selenide ion from a neutral selenium atom
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