NCERT BANGLISH|Exercise Questions(E. Explain briefly on the following)|6 Videos
DETECTION AND ESTIMATION OF ELEMENTS
NCERT BANGLISH|Exercise Problems (Estimation of halogens)|5 Videos
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The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to
Prove that the depression in freezing point is a colligative property.
Rate of water absorption is slow near freezing point because
15 g of a solute in 100 g water makes a solution freeze at -1^@C . 30 g of a solute in 100 g of water will give a depression in freezing point equal to :
In the depression of freezing point experiment it is found that
2g of benzoic acid (C_6H_5COOH) dissolved in 25 g of benzene shows a depression in freezing point equal to 1.62 K. Molal depression constant for benzene is 4.9 k kg mol^-1 . What is the percentage association of acid if it forms dimer in solution ?
0.6 mL of acetic acid (CH_3COOH) , having density 1.06g mL^-1 , is dissolved in 1 litre of water. The depression in freezing point observed for this strength of acid was 0.0205^@C . Calculate the van't Hoff factor and the dissociation constant of acid
Explain the method of purifying a solid organic compound
19.5 g of CH_2FCOOH is dissolved in 500 gm water. The depression in freezing point in 1^@C . Calculat the vant factor and dissociation constant of fluroacetic acid.
NCERT BANGLISH-COLLIGATIVE PROPERTIES-Questions(D. Explain briefly on the following)
