Page 1 - HOME ASSIGNMENT-2(PRACTICAL WORK SHEET)

Name: AdmNo: Class/Sec: ( )
Dt:_________________

SAI International School

Class-X
Subject_ Chemistry

Topic- Acids, Bases & Salts
Sub Topic- pH of Acids & Bases
PRACTICAL WORKSHEET
H
Observation of change in colour of samples with p paper & universal
indicator
Lab Work sheet
1.1 ml of lemon juice was taken in test tube. Its pH was determined by using a pH
paper. Excess of NaOH solution was then added to lemon juice in the tube and the
pH of resulting solution was again determined. What will be the colour change
observed and why?

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2. On putting a few drops of a liquid on a pH strip the colour of pH strip changed to
green. What is the pH of the liquid and what is its nature?

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3.On opening the soda water bottle the dissolved CO2 comes out, would the pH of
the solution increase or decrease as the gas comes out? Explain your answer either
way.

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4. What according to you should be the pH of dil. HCl and dil. NaOH solutions?
Explain your findings on basis of your observation.

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