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• Chemistry

• Finding pH of the following sa...

AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsFinding pH of the following samples by using pH paper/universal indicator:a.) Dilute Hydrochloric Acidb.) Dilute NaOH solutionc.) Dilute Ethanoic Acid solutiond.) Lemon juicee.) WaterAnswerVerified555.6k+ viewsHint: The nature of the chemicals used in laboratories is either basic, acidic or neutral. This characteristic depends on the ions they release. A chemical is said to be acidic if it releases H+ ions and basic if it releases OH– ions in its aqueous solutions. Complete step by step answer:- 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. Neutral solution has a pH of 7. - pH is defined as the negative logarithm of \[{{H}^{+}}\] ions. It can be mathematically represented as\[pH=-{{\log }_{10}}[{{H}^{+}}]\] pH scale- To find the pH of the given chemicals, the apparatus required is as follows:Test tubesTest tube standDropperGlass rodpH paper stripspH paper colour chart- First of all, arrange all the chemicals in clean, dry test tubes on the test tube stand. - Secondly, put one or two drops of each test solution on pH paper strips using a glass rod. - We will compare the pH using the pH scale chart from the observations given below:

Sr. No.	Sample Solution	Colour appeared on pH paper	pH of the solution	Inference
1.	Dilute HCl	Red	1	Strong acid
2.	Dilute NaOH solution	Purple	14	Strong alkali
3.	Dilute Ethanoic Acid solution	Yellow	3	Weak acid
4.	Lemon Juice	Orange	2	Acid
5.	Water	Green	7	Weak alkali

Note: As pH depends upon ${{H}^{+}}$ concentration and in an aqueous solution ${{H}^{+}}$ and $O{{H}^{-}}$ ion concentrations are correlated, Therefore, every acidic and basic solution shows different colour at different pH . Recently Updated PagesMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Social Science: Engaging Questions & Answers for SuccessMaster Class 11 Maths: Engaging Questions & Answers for SuccessMaster Class 11 Biology: Engaging Questions & Answers for SuccessMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Social Science: Engaging Questions & Answers for SuccessMaster Class 11 Maths: Engaging Questions & Answers for SuccessMaster Class 11 Biology: Engaging Questions & Answers for Success

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Repeaters Course for NEET 2022 - 23

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