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You are here: Home / Class 10 / Acid Bases and Salts / Importance of pH in everyday life

Importance of pH in everyday life

Last Updated on March 20, 2019 By Mrs Shilpi Nagpal 27 Comments

Question 1 What happens during a honey bee sting.What is its remedy?

Question 2 Under what soil conditions do you think a farmer would treat the soil of his field with quicklime?

Question 3 What happen if there is an excess of acid in the stomach.How can its effects be cured?

Question 4 Explain the pH change as the cause of tooth decay?

Question 5 How can tooth decay caused by the pH change be prevented?

Question 6 How does an antacid work.Name two common antacid?

Question 7 Which chemical is produced in stomach?

Question 8 Which chemical is injected into the skin of a person during an ant’s sting?

Contents

  • 1 pH plays very important role in our life through following ways
    • 1.1 pH in our digestive system
    • 1.2 pH change as the cause of tooth decay
  • 2 Plants and animals are sensitive to pH change
  • 3 Self Defence by animals and plants through chemical warfare

pH plays very important role in our life through following ways

  • pH in our digestive system

Our stomach produces hydrochloric acid.This dilute hydrochloric acid helps in digesting our food without harming the stomach.Sometimes excess of acid is produced in the stomach.The excess acid in the stomach causes indigestion which produces pain and irritation.In order to cure indigestion, we can take bases called antacids. Being basic in nature, antacid react with excess acid in the stomach and neutralises it. The two common antacids are Milk of Magnesia (Magnesium Hydroxide)and Sodium Bicarbonate(Baking soda)

  • pH change as the cause of tooth decay

When we eat food containing sugar, then the bacteria present in our mouth break down the sugar to form acids.This acid lowers the pH in the mouth.Tooth decay starts when the pH of acid formed in the mouth falls below 5.5.This is because then the acid becomes strong enough to attack the enamel of our teeth and corrode it.This sets in tooth decay.The best way to prevent tooth decay is to clean the mouth thoroughly after eating food.

Plants and animals are sensitive to pH change

Soil pH and plant growth: Most of the plants grow best when the pH of the soil is close to 7. If the soil is too acidic or basic, the plants grow badly or do not grow at all.The soil pH is also affected by the use of chemical fertilisers in the field.Chemicals can be added to soil to adjust its pH and make it suitable for growing plants.

If the soil is too acidic then it is treated with materials like quicklime or slaked lime.If the soil is too alkaline then alkalinity can be reduced by adding decaying organic matter.

Self Defence by animals and plants through chemical warfare

Many animals and plants protect themselves from enemies by injecting painful and irritating acids and bases into their skin.

(1) When honey bee stings a person, it injects an acidic liquid into the skin.Rubbing with     mild base like baking soda solution on the stung area of the skin gives relief.

(2) When a wasp stings,it injects an alkaline liquid into the skin.Then rubbing with a mild     acid like vinegar on the stung area of the skin gives relief.

Filed Under: Acid Bases and Salts, Class 10 Tagged With: antacids, hydrochloric acid, pH, self defence by animals, soil pH, tooth decay

About Mrs Shilpi Nagpal

Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. She has started this educational website with the mindset of spreading Free Education to everyone.

Reader Interactions

Comments

  1. Nabanur Rahman says

    January 14, 2018 at 10:20 pm

    It is really helpful for me

    Reply
    • Mrs Shilpi Nagpal says

      January 15, 2018 at 10:25 am

      Thanks Nabanur

      Reply
    • ENAYATULLAH says

      October 7, 2018 at 10:29 pm

      It is very beneficial for me sir may you live long

      Reply
  2. Tanya Chakaora says

    January 25, 2018 at 2:43 am

    wow cool never knew these things thanx a lot

    Reply
  3. rahul says

    April 17, 2018 at 1:32 pm

    it helped my project

    Reply
    • Aashiya says

      December 12, 2018 at 10:46 pm

      It is really helpful for my project. Thanks

      Reply
  4. Sai srinith says

    May 18, 2018 at 2:34 pm

    Hmm really good its same as I have in my text
    Very help ful

    Reply
    • Chintu says

      July 25, 2018 at 6:18 am

      If this is in your physics text book in lesson acids and bases then go for it.

      Reply
  5. Ayush says

    July 1, 2018 at 5:33 pm

    its so helpful for my project

    Reply
  6. nithya says

    July 15, 2018 at 6:53 am

    super it helped to my project

    Reply
  7. Adaa says

    July 27, 2018 at 8:45 am

    Brief and informative

    Reply
  8. Aman pandat says

    September 12, 2018 at 3:45 pm

    Thanks

    Reply
  9. Shivam says

    January 13, 2019 at 5:38 am

    It is really helpful thanx a lot

    Reply
  10. Dharitri Nayak says

    February 19, 2019 at 9:47 am

    It’s really help full for my exam
    Thanks a lot☺☺

    Reply
  11. Sdg says

    July 21, 2019 at 12:45 pm

    Very good

    Reply
  12. Diksha says

    July 31, 2019 at 11:53 pm

    Good explanation, this helpful to me…
    Thank you so much!

    Reply
  13. Diksha says

    July 31, 2019 at 11:56 pm

    Respected mam!
    Good explanation, this helpful to me…
    Thank you so much! for this…

    Reply
  14. Mohd daud says

    October 19, 2019 at 3:18 pm

    It gives accurate information about importance of ph.

    Reply
  15. Srinand says

    May 14, 2020 at 5:19 pm

    Awesome it helped in my project

    Reply
    • Dimple.R says

      December 30, 2020 at 2:17 pm

      Is it every use full

      Reply
  16. Kashish says

    June 11, 2020 at 10:26 am

    Thanks you so much for this knowledge

    Reply
  17. APPU says

    June 13, 2020 at 8:25 pm

    It’s really helpful for us
    Thank you so much

    Reply
  18. POONAM says

    June 18, 2020 at 7:27 pm

    Nice answer ☺

    Reply
  19. darshan says

    July 29, 2020 at 8:25 am

    it very helpful

    Reply
  20. M.Rakshitha says

    August 25, 2020 at 7:41 pm

    Thank you so much for clearing my doubt
    it’s very useful…….. superb……..

    Reply
  21. Manusmriti Rikhari says

    July 5, 2021 at 3:45 pm

    HELPFUL!!
    THANKYOU MAM

    Reply
  22. S.sheshitej says

    December 12, 2021 at 7:36 pm

    Nice information

    Reply

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