Chemistry Answers

` 4.Define any five of the following terms : (i) A component (ii) Critical point (iii) molar conductivity (iv) Transference number (v) Standard hydrogen electrode (vi) Electrolytic cells`

100 ml of raw water sample on titration ith N/50 H2SO4 required 12.4 ml of acid to phenolphthalein end point and 15.2 ml of the acid to methyl orange end point. Determine the types and extent of alkalinity.

100 ml of raw water sample on titration ith N/50 H2SO4 required 12.4 ml of acid to phenolphthalein end point and 15.2 ml of the acid to methyl orange end point. Determine the types and extent of alkalinity.

5g of acetylsalicylic acid (aspirin) was obtained from 2.4g of salicylic acid. Calculate % yield, if the theoretical yield is 3.6g.

Cyanide test is for the identification of

1. Phenols

2. Amines

3. Carboxylic acids

4. Ketones

1. “Cat clays” are soils containing a high level of iron pyrite, FeS₂. Hydrogen peroxide, H₂O₂ is added to such a soil, producing sulfate as a test for cat clays. Suggest a chemical reaction involved in this test? 

Glycine can be estimated by using which method?

1. Formylation method

2. Acetylation method

3. Bromination method

4. Esterification method

Salicylic acid reacts with acetic anhydride to form aspirin. If the percentage yield in this reaction is 80.0%, what will be the theoretical yield of aspirin if actual yield is 150.0g?

A mixture of 0.100 mol of NO, 0.050 mol of H2 and 0.10 mol of H2O is placed in a 1.0L vessel at 300 K. The following equilibrium is established: 2 NO(g) + 2 H2O(g). At equilibrium [NO] = 0.062 M. Calculate the equilibrium concentrations of Kc

A mixture of 0.100 mol of NO, 0.050 mol of H2 and 0.10 mol of H2O is placed in a 1.0L vessel at 300 K. The following equilibrium is established: 2 NO(g) + 2 H2O(g). At equilibrium [NO] = 0.062 M. Calculate the equilibrium concentrations of H2O