IJMB 2022 CHEMISTRY PRACTICALS SPECIMENS

check the Specimen belowbelow

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*INTERIM JOINT MATRICULATION BOARD EXAMINATION 2022*

*INSTRUCTIONS TO SCHOOLS, COLLEGES AND POLYTECHNICS CHEMISTRY PAPER III (ALTERNATIVE A)*

*1a). Solution A:* Prepare 0.25 mole dm’ aqueous solution of *Methanoic Acid (HCOOH).* Make
available for each student about 50 em of the solution.

*b).*Solution B:* Prepare 0.15 mole dm’3 aqueous solution of *Potassium Hydroxide(KOH).* Make
available for each student about 100 cm’ of the solution.

*c)*. Prepare methyl orange and phenolphthalein indicators for acid-base titrations.

*2.* Each student should be provided with the following samples (about Ig each) appropriately labeled as *SAMPLE AI* and *SAMPLE A2.*
*THESE SHOULD BE THE CONTENT OF EACH SAMPLE AND THIS INFORMATION SHOULD NOT BE DISCLOSED TO THE CANDIDATES.*

*SAMPLE 1=* BENZOIC ACID
*SAMPLE A2=* COPPER(II)TRIOXONTTRATE (V)

*Ensure that all necessary test reagents for inorganic and organic qualitative analysis are provided on the laboratory benches*