info.improove@gmail.com
+91 81788 23424

Experiment 18: pH Paper

Experiment 18: pH Paper

Objective

To find the pH of the given samples of solutions using pH paper

Materials required:

  • Test solutions of samples (a) a dilute acid; (b) a dilute base; (c) 1 gm salt in 10 mL distilled water; (d) soil water extract and (e) a fruit juice
  • Five test tubes
  • Test tube stand
  • pH papers

Procedure:

  • Put the samples in separate test tubes. Mark each test tube
  • Take a drop of sample in a dropper from each test tube one by one, and put on the Ph Paper
  • Observe the changes in the ph Paper

Findings:

Conclusions:

  • As pH depends upon H+ concentration and in an aqueous solution H+ and OH– ion concentrations are correlated, therefore, every acidic and basic solution shows different colour at different pH.

Theory:

  • The pH is the measure of the acidic (or basic) power of a solution. It is a scale for measuring hydrogen ion concentration in a solution. The pH scale varies from 0 to 14. At 25 °C (298 K), a neutral solution has pH equal to 7. A value less than 7 on the pH scale represents an acidic solution whereas pH value more than 7 represents basic solution.

Experiment-based learning kits

img
Chemistry Lab in A Box (Upto Class 10)

Comprehensive chemistry kit for Class 6 to 10

  • All reagents and lab equipment needed to do over 33 experiments as per Board syllabus

  • High quality and safe lab reagents

  • Videos of all the experiments Detailed instruction booklet with theory, concepts and procedures

MRPRs 4,499/-
AmazonRs 2,349/-
Buy on Amazon
FlipkartRs 2,399/-
Buy on Flipkart
HereRs 1,999/-
Buy Now
img
Refill for home experiment kits

Set of chemicals and reagents for home experiments

  • Support for all major science activity kits like Kutuhal, Einstein Box, Genius Minds, etc.

  • High quality and safe lab reagents

  • Strict quality testing procedures to ensure safety while doing experiments

MRPRs 2,499/-
AmazonRs 1,149/-
Buy on Amazon
FlipkartRs 1,199/-
Buy on Flipkart
HereRs 999/-
Buy Now!!
img
Basic chemistry equipment (starter kit)

Basic equipment to generate excitement towards science

  • Basic set of equipment like test tubes, holder, cleaner, filter papers, pipettes, litmus papers, etc.

  • High quality and safe lab equipment

  • Good starting point for children (suitable for children aged 7-10 years)

MRPRs 1,499/-
AmazonRs 499/-
Buy on Amazon
FlipkartRs 499/-
Buy on Flipkart
HereRs 449/-
Buy Now!!
img
Crystallography @ home

Make bright-colored crystals of different shapes and sizes

  • All reagents and equipment needed to make bright crystals - from multiple compounds

  • Instruction booklet and videos

  • Learn about crystallography - crystal shapes, solubility, effect of temperature, etc.

MRPRs 1,499/-
AmazonRs 1,149/-
Buy on Amazon
FlipkartRs 1,149/-
Buy on Flipkart
HereRs 999/-
Buy Now!!