Question
Draw the chain isomers of hexane $(C_6H_{14}) .$
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State one relevant observation for each of the following reactions :
(i) Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess.
(ii) Action of Sodium hydroxide solution on ferrous sulphate solution.
(iii) Lead nitrate solution is treated with sodium hydroxide solution drop wise till it is in excess.
(i) Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess.
(ii) Action of Sodium hydroxide solution on ferrous sulphate solution.
(iii) Lead nitrate solution is treated with sodium hydroxide solution drop wise till it is in excess.
How can you prove that hydrochloric acid contain :
Chlorine?
Chlorine?
Potassium nitrate on strong heating decomposes as under :
$2KNO_3\rightarrow 2KNO_2 + O_2$
Calculate : Weight of oxygen formed when $5.05g$ of potassium nitrate decomposes completely.
$(K = 39, 0 = 16, N = 14)$
→$2KNO_3\rightarrow 2KNO_2 + O_2$
Calculate : Weight of oxygen formed when $5.05g$ of potassium nitrate decomposes completely.
$(K = 39, 0 = 16, N = 14)$
You have collected (a) 2 litres of $CO _2$ (b) 3 litres of chlorine (c) 5 litres of hydrogen (d) 4 litres of nitrogen and (e) 1 litres of $SO _2$, under similar conditions of temperature and pressure. Which gas sample will have :
(a) the greatest number of molecules, and
(b) The least number of molecules?
Justify your answers.
→(a) the greatest number of molecules, and
(b) The least number of molecules?
Justify your answers.
Write the difference between with examples:
Electrolytic dissociation and ionization
Electrolytic dissociation and ionization
Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the questions that follow based on this reaction :
(i) Give the balanced chemical equation for the reaction with suitable condition(s) if any.
(ii) Why is concentrated sulphuric acid used instead of concentrated nitric acid?
(iii) How is the gas collected?
(i) Give the balanced chemical equation for the reaction with suitable condition(s) if any.
(ii) Why is concentrated sulphuric acid used instead of concentrated nitric acid?
(iii) How is the gas collected?
Study the flow chart given and give balanced chemical equations to represent the reactions A, B and C :
Write a balanced equation for the following:
(i) C2H5Br + alcoholic KOH → ? (ii) CH3CH2COONa + soda lime? (iii) C2H4 + Br2 → ?
(i) C2H5Br + alcoholic KOH → ? (ii) CH3CH2COONa + soda lime? (iii) C2H4 + Br2 → ?
Write the equations of the reactions which take place at the cathode and anode when acidified water is electrolyzed.
The diagram given below is to prepare iron (III) chloride in the laboratory.
(i) What is substance B?
(ii) What is the purpose of B?
(iii)Why is iron (III) chloride to be stored in a closed container?
(iv) Write the equation for the reaction between iron and chloride ?
(i) What is substance B?
(ii) What is the purpose of B?
(iii)Why is iron (III) chloride to be stored in a closed container?
(iv) Write the equation for the reaction between iron and chloride ?