alleryStart learning →A change of how many pH units in blood can cause death?
- 0.2
- 0.02
- 2.0
- 5.0
Show answer and solution
Correct answer: A. 0.2
Blood pH tolerates only a very narrow window, and a shift of about 0.2 units can be fatal.
MHT-CET Ionic Equilibria — practice questions — page 3
Explore 77 free Ionic Equilibria questions in MHT-CET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
Practise Ionic Equilibria with Quill →Ionic Equilibria questions and exercises with answers
Showing questions 61–77 of 77.
A change of how many pH units in blood can cause death?Read the answer and worked solution →In qualitative analysis, group IIIA cations are precipitated at pH 8 to 10 usingRead the answer and worked solution →Penicillin preparations are stabilised by addingRead the answer and worked solution →The pH of soil is kept in check mainly because soils containRead the answer and worked solution →The expression Ksp for a sparingly soluble salt is called itsRead the answer and worked solution →The Ksp expression for CaF2 isRead the answer and worked solution →Molar solubility of a compound equals its solubility in g/L divided byRead the answer and worked solution →For a sparingly soluble salt of type AB, Ksp in terms of molar solubility S isRead the answer and worked solution →For PbI2, Ksp in terms of molar solubility S isRead the answer and worked solution →The Ksp of AgBr is 5.2 x 10^-13. Its molar solubility is aboutRead the answer and worked solution →When the ionic product exceeds Ksp, the solution isRead the answer and worked solution →Ionic product of MgC2O4 in a mixture is 7.5 x 10^-3 against Ksp 8.56 x 10^-5. What happens?Read the answer and worked solution →Kidney stones are mainly formed by precipitation ofRead the answer and worked solution →Tooth decay involves dissolution in acid of the enamel compoundRead the answer and worked solution →Adding CH3COONa to a CH3COOH solutionRead the answer and worked solution →After adding a common ion to a saturated solution, the value of KspRead the answer and worked solution →In HCl + H2O giving H3O+ + Cl-, the conjugate acid of water isRead the answer and worked solution →
Worked practice questions
In qualitative analysis, group IIIA cations are precipitated at pH 8 to 10 using
- HCl and NaCl
- NH4OH and NH4Cl
- H2SO4 and Na2SO4
- CH3COOH and NaOH
Show answer and solution
Correct answer: B. NH4OH and NH4Cl
The ammonium hydroxide and ammonium chloride buffer holds the required pH of 8 to 10.
Penicillin preparations are stabilised by adding
- sodium citrate
- sodium chloride
- plain glucose
- sodium sulphate
Show answer and solution
Correct answer: A. sodium citrate
Sodium citrate acts as a buffer that keeps penicillin preparations at stable pH.
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