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What is the colour of universal indicator in sodium hydroxide?
violet
Explanation: The universal indicator added to the sodium hydroxide turns the original solution a violet color. The indicator is used to detect the presence of an acid or base, and the sodium hydroxide is a base, turning the solution purple.
What turns hydrochloric acid green?
When concentrated hydrochloric acid is added to a solution of copper (II) ions, it’s forming a copper (II) chloride complex; this complex appears green because it absorbs red light.
What colour is water in universal indicator?
yellow-green
Mineral water is neutral, neither acidic nor alkaline. In such a solution, universal indicator has a yellow-green colour. In acidic solutions universal indicator turns a colour between red (strong acid) and pale orange (weak acid).
Does hydrochloric acid turn green?
Adding hydrochloric acid to a solution of copper ions will cause it to turn green. When concentrated hydrochloric acid is added to a solution of copper (II) ions, it’s forming a copper (II) chloride complex; this complex appears green because it absorbs red light.
What kind of colour does hydrochloric acid turn?
As, pH = 1, it is very strong. So, Hydrochloric acid turn universal indicator into red colour. Answer verified by Toppr Upvote (0)
What should hydrochloric acid be in a universal?
Hydrochloric Acid is known to be a very strong acid. A 0.01 molar solution of HCl has a pH of 2 ( -log(0.01) ) which on the pH scale is very acidic (under 7 is acidic, 7 is neutral, over 7 is basic). On a universal indicator test, HCl would come out as red.
What should the colour of HCl be in a universal test?
A 0.01 molar solution of HCl has a pH of 2 ( -log(0.01) ) which on the pH scale is very acidic (under 7 is acidic, 7 is neutral, over 7 is basic). On a universal indicator test, HCl would come out as red.
What is the colour of a pH indicator?
A pH indicator is a substance that changes colour depending on the acidity of the environment that it is exposed to. The main property of a pH indicator is that it should change colour between two different pH reading. (E.g. phenolophatlein is an indicator that is colourless if the pH<8.3 and pink is the pH>10.0).