Exam practise questions on molarity of solutions calculations revision molarity moles questions on concentration quiz for AQA, Edexcel, OCR, WJEC, CCEA GCSE chemistry courses doc brown's chemistry

What is the molarity of the solution formed by dissolving 20 g of sodium hydroxide (NaOH) in 1000 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-1]
1. 0.50
2. 0.25
3. 1.00
4. 2.00
What is the molarity of the solution formed by dissolving 10 g of sodium hydroxide (NaOH) in 500 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-2]
1. 1.00
2. 0.50
3. 0.25
4. 2.00
What is the molarity of the solution formed by dissolving 80 g of sodium hydroxide (NaOH) in 500 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-3]
1. 2
2. 1
3. 4
4. 8
What is the molarity of the solution formed by dissolving 9.8 g of sulphuric acid (H₂SO₄) in 1000 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-4]
1. 10.0
2. 0.01
3. 1.0
4. 0.1
What is the molarity of the solution formed by dissolving 196 g of sulphuric acid (H₂SO₄) in 1000 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-5]
1. 2.0
2. 0.5
3. 3.0
4. 1.5
What is the molarity of the solution formed by dissolving 49 g of sulphuric acid (H₂SO₄) in 250 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-6]
1. 0.4
2. 2.0
3. 0.5
4. 1.0
What mass (g) of potassium hydroxide (KOH) is needed to make up 1000cm³ of a solution of concentration 1mol/dm³? (A_r's: K=39, O=16, H=1) [msc-7]
1. 0.056
2. 0.56
3. 56
4. 560
What mass (g) of potassium hydroxide (KOH) is needed to make up 500cm³ of a solution of concentration 0.2mol/dm³? (A_r's: K=39, O=16, H=1) [msc-8]
1. 11.2
2. 2.8
3. 0.56
4. 5.6
What mass (g) of potassium hydroxide (KOH) is needed to make up 500cm³ of a solution of concentration 4.0mol/dm³? (A_r's: K=39, O=16, H=1) [msc-9]
1. 112
2. 56
3. 224
4. 28
What mass (g) of hydrogen chloride (HCl) is needed to make up 1000cm³ of a solution of concentration 1mol/dm³? (A_r's: H=1, Cl=35.5) [msc-10]
1. 73
2. 36.5
3. 0.036
4. 0.073
What mass (g) of hydrogen chloride (HCl) is needed to make up 500cm³ of a solution of concentration 4mol/dm³? (A_r's: H=1, Cl=35.5) [msc-11]
1. 36.5
2. 146
3. 73
4. 292
What mass (g) of hydrogen chloride (HCl) is needed to make up 500cm³ of a solution of concentration 0.2mol/dm³? (A_r's: H=1, Cl=35.5) [msc-12]
1. 7.30
2. 14.6
3. 1.83
4. 3.65
What is the molarity of the solution formed by dissolving 20 g of sodium hydroxide (NaOH) in 1000 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-1]
What is the molarity of the solution formed by dissolving 10 g of sodium hydroxide (NaOH) in 500 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-2]
What is the molarity of the solution formed by dissolving 80 g of sodium hydroxide (NaOH) in 500 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-3]
What is the molarity of the solution formed by dissolving 9.8 g of sulphuric acid (H₂SO₄) in 1000 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-4]
What is the molarity of the solution formed by dissolving 196 g of sulphuric acid (H₂SO₄) in 1000 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-5]
What is the molarity of the solution formed by dissolving 49 g of sulphuric acid (H₂SO₄) in 250 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-6]
What mass (g) of potassium hydroxide (KOH) is needed to make up 1000cm³ of a solution of concentration 1mol/dm³? (A_r's: K=39, O=16, H=1) [msc-7]
What mass (g) of potassium hydroxide (KOH) is needed to make up 500cm³ of a solution of concentration 0.2mol/dm³? (A_r's: K=39, O=16, H=1) [msc-8]
What mass (g) of potassium hydroxide (KOH) is needed to make up 500cm³ of a solution of concentration 4.0mol/dm³? (A_r's: K=39, O=16, H=1) [msc-9]
What mass (g) of hydrogen chloride (HCl) is needed to make up 1000cm³ of a solution of concentration 1mol/dm³? (A_r's: H=1, Cl=35.5) [msc-10]
What mass (g) of hydrogen chloride (HCl) is needed to make up 500cm³ of a solution of concentration 4mol/dm³? (A_r's: H=1, Cl=35.5) [msc-11]
What mass (g) of hydrogen chloride (HCl) is needed to make up 500cm³ of a solution of concentration 0.2mol/dm³? (A_r's: H=1, Cl=35.5) [msc-12]

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11. GCSE level chemistry practise exam questions on solution concentrations including molarity