Organic Chemistry Answers

How many ml conceentration HNO3 and how many ml of water are required to prepare 500 ml of 0.1 M HNO3 from a concentration 13 M HNO3

Which one of the following can exist in optically active forms?

A) cis-1,3-Dichlorocyclohexane B) trans-1,3-Dichlorocyclohexane C) cis-1,4-

Dichlorocyclohexane D) trans-1,4-Dichlorocyclohexane E) cis-1,2-

Dichlorocyclohexane

You need 450 mL of 0.16 M NaOH .All you have available is a 2.0 M stock solution of NaOH. How do you make the required solution.

a.      What mass of CO is required to react with 25.13gn of Fe2O3 according to the chemical reaction below:

  Fe₂O₃   +      CO                    Fe    + CO₂       

A 0.010 mol sample of barium nitrate formed was heated until it had completely decomposed according to the following balanced equation: 2Ba (NO3)2(s) ˗˗˗˗˗˗˗˗˗˃˃ 2 BaO(s) + 4 NO2 (g) + O2(g) a) Use the ideal gas equation to calculate the total volume, cm3, of gaseous products obtained at 387 K and 1.12 × 105 Pa. b) The Kinetic Theory of gases is an attempt to explain the properties (behaviour) of ideal gases. What assumptions (at least three) does this theory make about gas molecules?

You have a solution containing 0.05 mole/l of Acetic acid and another solution containing 0.01.mole/l ammonium chloride

If feasible to make buffer solution from these two?if so calculate the pH of the solution. Dissociation constant of Acetic acid at room tem is 4.6×10^-5

What does acetone and a base make

4-ethyl -2,5,5- trimethyl heptane

Hydrolysis of a compound B (formula C7H5Cl2) was carried out by refluxing with excess potassium hydroxide solution. The resulting solution was acidified with dilute nitric acid and excess silver nitrate added to precipitate the chloride ions as silver chloride, 0.718g of silver chloride was formed from 0.805g of B.

a. Calculate the number of chlorine atoms present in each molecule of B which are liberated by hydrolysis.

b. Suggest an explanation for results obtained in (a).

c. Give a possible structure of B.

In each of following cases give the name or structure of one compound which fits the information given. Explain your reasoning and write equations for the reactions involved.

a. R is a liquid which react vigorously with concentrated aqueous ammonia to form a solid which is readily dehydrated by warning with phosphorus v oxide.

b. S is a liquid which dissolves in hot aqueous sodium hydroxide to form a solution which on cooling and acidifying precipitate a white solid. A solution of this solid evolves carbon iv oxide with aqueous sodium carbonate.