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Electric current is passed through a concentrated aqueous solution of sodium chloride by means of a battery. After disconnecting the circuit the solution thus obtained is divided into two equal parts by volume. In one part phenolphthalein and in another part methyl orange indicator was added. The colour of the solutions will be respectively |
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(a) |
pink and red |
(b) |
colourless and yellow |
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(c) |
pink and yellow |
(d) |
colourless and red |
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Electric current is passed through a concentrated aqueous solution of sodium chloride by means of a battery. After disconnecting the circuit the solution thus obtained is divided into two equal parts by volume. In one part phenolphthalein and in another part methyl orange indicator was added. The colour of the solutions will be respectively |
|||
|
(a) |
pink and red |
(b) |
colourless and yellow |
|
(c) |
pink and yellow |
(d) |
colourless and red |