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What is the effect of the following on the volume of 1 mol of an ideal gas? The pressure is reduced by a factor of 4 (at constant T).
What is the function of starch in an iodometric titration? Why should starch solution be added just before the end-point of the titration?
In the titration of CuSO/Hypo, a dark yellow color is obtained on the addition of KI in CuSO4 solution. Why is this dark yellow color obtained?
3.0g of a sample of impure crystalline copper sulphate was dissolved in water and made up 250 ml. solution 20.0 mL of this solution required iodometrically 23ml. of sodium thiosulphate 24 ml of this sodium thiosulphate solution required 25 ml. of a N/25 solutionof a pure crystalline copper sulphate. Find out the percentage purity of the impure sample of crystalline copper sulphate (Eq. Wt of CuSO. SH₂O=249.71). Give necessary equations.
Why only ferrous sulphate is not used to make a primary standard solution instead of ferrous ammonium sulphate, Mohr's salt?
What is the function of starch in an iodometric titration? Why should starch solution be added just before the end-point of the titration?
In the titration of CuSO/Hypo, a dark yellow color is obtained on the addition of KI in CuSO4 solution. Why is this dark yellow color obtained?
A silver coulometer was connected in series with another cell containing M²^+ solution of an unknown metal. M. After passing electric current for 1hr through the two cell it was found that 5.43g of Ag was deposited, while 2.83g of M was deposited in the cell. What is the molar mass of M?
Rank the following compounds according to their water solubility, most soluble first. Explain your ranking.
A. CH3(CH2)10CH2OH
B. CH3CH2OCH3
C. CH3CH2CHCH3
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OH
What alcohols yield the following alkenes on dehydration?
A. (CH3)2C = C(CH3)2
B. CH3CH2CH = CH2
#331389 on Nov 2022