chemistry practicalquestion .neco 2011

C is a mixture of asalts.to some quantity of C add 10cm3 of distilled water and filter, keep the filtrate and residue. i) to 3cm3 of the filtrate add NaOH then heat the mixture in (i) above.ii)to some portion of the filtrate add AgNO3,then add HNO3. (iii) tothe mixture in (ii) add NH4OH.B)i) to some portion of the residue add HCl. ii) to the solution in i) above add NaOH in drops and in excess.

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Subject: Re: NECO REAL QUESTION 05/06/11, 10:26 am Select/Unselect multi-quote Reply with quote
CHEMISTRY
A is a solution of mineral acid.
B is a solution of potassium
hydroxide containing 2.0g of
solute in 250cm3 of solution.
Titrate A against 20.0cm3 or
25.0cm3 of B using methyl
orange or phynolthaline as an
indicator.
Tabulate your readings.
Calculate the average volume
of acid used. /B/calculate
i,conc. Of B in mol/dm3
ii,conc. of A in mol/ dm3
iii,Amount of acid used. [red
and blue litmus paper
ii)aqueous ammonia
iii)dilute HNO3(3 is subscrip) iv)
dilute silver trioxonitrate(v)
solutn
v)aqueous sodium hydroxide
vi)dilute Hcl volumentry

Subject: chemistry practicalquestion .neco 2011 10/06/11, 02:39 pm Select/Unselect multi-quote Reply with quote
C is a mixture of asalts.to some quantity of C add 10cm3 of distilled water and filter, keep the filtrate and residue. i) to 3cm3 of the filtrate add NaOH then heat the mixture in (i) above.ii)to some portion of the filtrate add AgNO3,then add HNO3. (iii) tothe mixture in (ii) add NH4OH.B)i) to some portion of the residue add HCl. ii) to the solution in i) above add NaOH in drops and in excess.

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Thanks 4 today practical chemistry pls i'm in need of english language,bcs it is on thursday dat we having it.

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I need practical agric question pls

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I Beg I Need ChemIstry 4 NECO now...,

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