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Exercise 1.11

The document contains a series of chemistry exercises focused on stoichiometry, concentrations, and solution preparation. It includes questions about calculating moles of acids and bases, determining concentrations of ions in solutions, and preparing specific molar solutions. The exercises require knowledge of molarity, mass calculations, and solution dilution techniques.

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Muhammad Ali
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15 views2 pages

Exercise 1.11

The document contains a series of chemistry exercises focused on stoichiometry, concentrations, and solution preparation. It includes questions about calculating moles of acids and bases, determining concentrations of ions in solutions, and preparing specific molar solutions. The exercises require knowledge of molarity, mass calculations, and solution dilution techniques.

Uploaded by

Muhammad Ali
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF or read online on Scribd
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EXERCISE 1.14 4. How many moles of hydrochloric acid are present in @.80 dim’ of a solution with a concentration of 0.40 mol dm’. A 0.32 BOS Cc 08 D 2 2. Sodium phosphate has the formula Na;PO,, What is the concentration of sodium, ioas in a 0,6 mol dav solution of sodium phosphate? A 0.2 mol dm? B 03 moldm? C 0.6 mol dm D — 1.8mol dm* Stoichiometry 3. What volume of a 0,5 mol dm? solution of sodium hydroxide can be prepared from 2 g of the solid? A 0.05 litres. B 0.1 litres COA lites D O05 titres 4, What are the concentrations of the solutions produced by dissolving a) 3.0 moles of nitric acid in 4.0 dm’ of solution? b) 2.81 g of KOH in 2.00 dv of solution? ©) 5.00 g of magnesium sulfate heptahycrate in 250 cm’ of solution? 5. How many moles are there in the following? &) 7,0 dm’ of sulfuric acid of concentration 0.30 mol dm? by) S0.emS of a 0.040 mol dra sotution of lithium chloride, ¢} {5.0 em’ of a solution made by dissolving 5.80 g of zine chloride in 2.50 dim? of solution 6. What volume of solution could you produce in the following cases’? a) I mol dm? copper(I) chloride from 6.4 moles of the solid, }) 0200 mol div? NaNO; starting from 5.00 g of the solid, ©) Dilute 0.50 mol dnv* sulfuric acid starting with 20 em? of a concentrated 18 mol dm? solution. 7. How would you prepare 500 cm’ of a 0.100 mol div NaC? solution? 8. How would you prepare 1.2 dim’ of a 0.40 mol dm® solution of HCI starting from 42.0 mol dm solution? 9. 500.cm* of 0.500 mol dm? NaC? is added to 500 cm? of 1.00 mol dm Na;CO; solution. Calculate the final concentration of Na* ions in solution, 10. When hydrochloric acid is added to aqueous lead nitrate, solid lead chloride is precipitated, If 10 em’ of 2 mol dny* hydrochloric acid is added to 40 em? of 0.5 mol dm? aqueous lead nitrate, what is the concentration in the final solution of 2) nitrate ions b) chloride ions c) hydrogen ions d) _ lead ions

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