Question

Colpur of Ph paper of solutionof h2so4 and mg(oh)2

Answer 1

Answer:

red in H2 s o4 and blue in MG oh twice

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Answer 2

The colours obtained on pH paper are given and explained below.

• pH paper is used to determine whether a substance is acidic, basic or neutral.
• The first solution given is sulphuric acid which is a strong acid and when pH paper is dipped in the solution, the colour obtained will be red showing the value 1.
• The second solution given is magnesium hydroxide which is a weak base and when pH paper is dipped in the solution, the colour obtained will be blue showing the pH value 10.
• The neutral value is 7 as of water. Moving left to it gives the acidic value, whereas moving right to it gives us the basic value.