when some pellets of sodium hydroxide are place on red litmus paper then initially nothing happens but after some time the red litmus starts turning blue explain why
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Explanation:
turning of NaOH into blue from Red litmus because it is a combination of sodium ions and hydroxide (OH-) ions which have the property of late reacting. Therefore, it happens
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Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly.
(a) Nitric acid turns red litmus to blue. (b) Sodium hydroxide turns blue litmus to red. (c) Sodium hydroxide and hydrochloric acid neutralizes each other and form salt and water. (d) Indicator is a substance which shows different colours in acidic and basic solutions.
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