Chemistry
Classify the following substances under three headings:
(a) strong electrolytes
(b) weak electrolytes
(c) non-electrolytes
Acetic acid, ammonium chloride, ammonium hydroxide, carbon tetrachloride, dilute hydrochloric acid, sodium acetate, dilute sulphuric acid.
Electrolysis
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Answer
(a) Strong electrolytes — dilute hydrochloric acid, dilute sulphuric acid, sodium acetate, ammonium chloride
(b) Weak electrolytes — acetic acid, ammonium hydroxide
(c) Non-electrolytes — carbon tetrachloride
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Related Questions
Name:
(a) a salt which is a weak electrolyte
(b) a base which is a weak electrolyte
(c) an inert electrode and an active electrode
(d) a positively charged non-metallic ion
(e) the electrode at which reduction occurs
(f) a non-metallic element which is a conductor of electricity
Electrolysis is a redox process. Explain.
Explain why:
(a) Cu, though a good conductor of electricity, is a non electrolyte.
(b) Solid sodium chloride does not allow electricity to pass through.
Choose A, B, C or D to match the descriptions (i) to (v) below. Some alphabets may be repeated.
A. non-electrolyte
B. strong electrolyte
C. weak electrolyte
D. metallic conductor
(i) Molten ionic compound
(ii) Carbon tetrachloride
(iii) An aluminium wire
(iv) A solution containing solvent molecules, solute molecules and ions formed by the dissociation of solute molecules.
(v) A sugar solution with sugar molecules and water molecules.