Concentrations calculations

1 A molar solution is one which contains :­Choose one:­

a)     1 molecule of hydrogen per cm³ of solution.

b)     1 molecule of hydrogen per dm³ of water.

c)      1 mole of solute in 1 dm³ of solvent.

d)     1 mole of solute in 1 dm³ of solution.

e)     1 mole of solute in 1 cm³ of solution.

2) How many moles of the solute is in the following solutions?

a)     1000cm³ of 0.1M silver nitrate solution.

b)     250cm³ of 0.1M potassium dichromate solution.

c)      250cm³ of 0.1M sodium chloride solution.

d)     10cm³ of 2M sodium chloride solution.

e)     12.2cm³ of 1.56M nitric acid.

f)        12.2cm³ of 1.56M sulphuric acid.

3) What is the Concentration of :­

a)     1 mole of AgNO₃ in 1000cm³ of solution?

b)     2 moles of AgNO₃ in 250 cm³ of solution?

c)     0.5 moles of NaCl in 250 cm³ of Solution?

d)     6 moles of KMnO₄ in 2 dm³ of solution?

e)     4 moles of Na₂S₂O₃.5H₂O in 250 cm³ of solution?

f)      2 moles of CuSO₄.5H₂O in 250 cm³ of solution?

4) What is the Concentration of :­

a)     1.7g of AgNO₃ in 1000cm³ of solution?

b)     0.425g of AgNO₃ in 250 cm³ of solution?

c)      5.85g of NaCl in 250 cm³ of Solution?

d)     3.16g of KMnO₄ in 2 dm³ of solution?

e)     6.2g of Na₂S₂O₃.5H₂O in 250 cm³ of solution?

f)        5.62g of CuSO₄.5H₂O in 250 cm³ of solution?

5) What mass of each of the following is dissolved in 250 cm³ of 0.1M solution? (2dp)

a) AgNO₃       b) HCI             c) H₂SO₄        d) Sodium hydroxide            e) potassium manganate (VII)