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How can we know that given chemical equations are strong or weak?

Posted by Satyam Choudhary 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Rishabh Kothari 4 years, 2 months ago

By using pH scale. It is used to measure whether that substances are acidic or basic

0Thank You

Punita Palak 4 years, 2 months ago

the strength of an acid or a base can be measured using a pH scale. pH stands for 'power of hydrogen'. pH is a scale used for measuring the hydrogen ion concentration in a solution. This scale ranges from values 0 to 14. The higher the concentration of hydrogen ions, the lower is the pH value. •So if th pH is less than 7 (0to 3) then it is acidic and strong acid and high H+ions. •if pH is 3. to 6. It is weak acid so low H+ions. •pH 7 is nutral •pH 8 to 11 weak base and low OH- ions •pH 11 to 14 strong base and high OH-ions In order to find the strength of an acid or a base, a universal indicator is used, A universal indicator is a mixture of several indicators, and it shows a different colour for differen hydrogen ions concentrations in a solution, Since the hydrogen ion concentration of a solution Indicated by its pH value, each colour change shown by the universal indicator corresponds to a value on the pH scale.

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CBSE > Class 10 > Science