Chemistry
How will you identify the following salts: calcium chloride, lead chloride and zinc chloride?
Acids Bases Salts
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Answer
In order to test the three salts we add ammonium hydroxide solution to each of the salt solutions first a few drops and then in excess.
We will observe that there is no ppt. formed in case of calcium chloride, whereas chalky white ppt. is formed in case of lead chloride which is insoluble in excess of ammonium hydroxide solution. Zinc chloride reacts to form a gelatinous ppt. which dissolves in excess of ammonium hydroxide solution.
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Related Questions
You are provided with the following substances
A. Lead chloride
B. Zinc sulphide
C. Sodium carbonate
D. Lead Nitrate
E. Ammonium carbonate
F. Calcium chloride
G. Calcium sulphite
H. Zinc carbonate
I. Silver Nitrate
Choose one substance in each case which matches the description below :
(i) A normal salt formed when basic oxide and acidic oxide react
(ii) An insoluble binary salt
(iii) Insoluble carbonate
(iv) An insoluble salt formed from two soluble salts.
(v) A salt which on heating leaves metal as residue.
State your observations and write balanced equations.
(i) Sodium chloride solution is mixed with lead nitrate solution.
(ii) Ethylene gas is passed through a solution of bromine in carbon tetrachloride.
(iii) Sodium hydroxide is added to iron (III) sulphate solution.
(iv) Chlorine is passed through a solution of potassium iodide.
(v) Ammonium hydroxide solution is added to copper sulphate solution in excess.
Give balanced equations for the laboratory preparation of the following gases :
(i) Ammonia
(ii) Ethylene.
Give one difference between the following.
(i) Ionisation and electrolytic dissociation.
(ii) Ionisation potential and electron affinity.
(iii) Polar and non-polar molecule.
(iv) Normal salt and acidic salt.
(v) Saturated hydrocarbons and unsaturated hydrocarbons.