f4 chemistry chap7 exe 02 acids and bases

8/11/2019 F4 Chemistry Chap7 Exe 02 Acids and Bases

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F4 Chemistry Concentration of Acids and Alkalis

Chapter 7 Acid and Base

Calculation

1. 100 g of phosphoric acid, H3PO4is dissolved in 5.0 dm3

of water. Find concentration ofacid in g dm-3.

. !alc"late the concentration, in g dm-3of 1# g h$drogen %romide in 00 cm3.

3. Find the molarit$ of copper &''( s"lphate when 0.50 mol of !")O4dissolve in 500 cm3of

water.

4. !alc"late the molarit$ of 1.5 mol %ari"m h$dro*ide in 500 cm3of sol"tion.

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5. !onvert 11+.# g dm-3phosphoric acid, H3PO4to mol dm-3. rH 1/ O 1#/ P 31

#. hat is the molarit$ of 42 g dm-3of vinegar, !H3!OOH rH 1/ ! 1/ O 1#

+. !onvert 1.3 mol dm-3s"lph"ric acid, H)O4to g dm-3. rH 1/ O 1#/ ) 3

2. !alc"late the concentration, in g dm

-3

, 1. mol dm

-3

copper &''( chloride, !"!lsol"tion.r!l 35.5/ !" #4

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. !alc"late the n"m%er of moles of all ions present in the following sol"tiona( 10.0 cm3of 0.0 mol dm-3potassi"m h$dro*ide, OH sol"tion

%( 50.0 cm3of .0 mol dm-3al"mini"m s"lphate, l&)O4(3

10.!alc"late the vol"me of the sol"tion needed to prepare each of the following dil"tesol"tiona( 50 cm3of 0.1 mol dm-3sodi"m h$dro*ide, 6aOH sol"tion from .0 mol dm-3sodi"m

h$dro*ide, 6aOH sol"tion

%( 100 cm3of 0.5 mol dm-3potassi"m manganate &7''(, 8nO4sol"tion from 1.0 moldm-3potassi"m manganate &7''(, 8nO4sol"tion

c( 5.0 dm3of 1.0 mol dm-3nitric acid, H6O3sol"tion from 12.0 mol dm-3nitric acid,H6O3sol"tion

d( .5 dm3of 0.5 mol dm-3s"lph"ric acid, H)O4from .0 mol dm-3of the same acid

sol"tion

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11.rite a %alanced e9"ation for the ne"trali:ation of each of the followinga( 6itric acid, H6O3and calci"m h$dro*ide, !a&OH(sol"tion

%( )"lph"ric acid, H)O4and %ari"m h$dro*ide, ;a&OH(sol"tion

c(


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15.00 cm3of 1.0 mol dm-3s"lph"ric acid, H)O4is po"red into a 50 cm3vol"metric flas>.

?istilled water is then added to ma>e 50 cm3 of sol"tion.a( hat is the molarit$ of the dil"ted acid sol"tion%( hat is the vol"me of 1.# mol dm-3sodi"m h$dro*ide sol"tion needed to ne"trali:e

5 cm3of the dil"ted acid

1#.100 cm3of a sodi"m h$dro*ide sol"tion contains 4.0 g of solid sodi"m h$dro*ide. 40cm3of phosphoric acid, H3PO4is needed to ne"trali:e 40 cm

3of the al>ali.

a( !alc"late the molarit$ of the sodi"m h$dro*ide sol"tion.%( !alc"late the molarit$ of the phosphoric acid.

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1+. st"dent dissolved 3.#5 g of h$drogen chloride gas in water to ma>e 1.0 dm 3 ofsol"tion. !alc"late the vol"me of 0.1 mol dm-3%ari"m h$dro*ide sol"tion re9"ired tocompletel$ ne"tralise 5.0 cm3of the acid sol"tion. rH 1/ !l 35.5

12.!alc"late the mass of sla>ed lime containing calci"m h$dro*ide, !a&OH(needed tocompletel$ ne"trali:e #.5 cm3of 1.# mol dm-3nitric acid, H6O3. rH 1/ O 1#/ !a 40

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f4 chemistry chap7 exe 02 acids and bases

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