WorksheetsOCR Chemistry A - 'Amount of Substance' 2.1.1 e-g
Total questions: 18
Worksheet time: 11mins
What mass of iron is produced when 32.0kg of iron (III) oxide is heated with CO?
Fe2O3(s) + 3 CO(g) --> 2 Fe(s) + 3 CO2(g)
11200 g
22400 g
201 g
401 g
What mass of oxygen is needed to convert 102 g of ammonia into nitrogen?
4 NH3(g) + 3 O2(g) --> 2 N2(g) + 6 H2O(g)
144 g
192 g
256 g
128 g
What volume of oxygen reacts with 100 cm3 of but-1-ene at RTP?
C4H8(g) + 6 O2(g) --> 4 CO2(g) + 4 H2O(l)
400 cm3
250 cm3
800 cm3
600 cm3
What volume of oxygen is used when 200cm3 of ethane combusts?
C2H6(g) + 3.5 O2(g) --> 2 CO2(g) + 3 H2O(l)
350 cm3
175 cm3
400 cm3
700 cm3
Calculate the volume of 0.05 mol dm-3 KOH that is required to neutralise 25.0 cm3 of 0.030 mol dm-3 HNO3
HNO3 + KOH --> KNO3 + H2O
Give your answer in cm3 to 3sf.
(a)
A 250 cm3 solution of NaOH was prepared. 25.0 cm3 of this solution required 27.4 cm3 of 0.100 mol dm-3 HCl for neutralisation.
Calculate what mass of NaOH was dissolved to make up the original 250 cm3 solution.
HCl + NaOH --> NaCl + H2O
Give your answer in grams to 3sf.
(a)
If I have 72 dm3 of ammonia gas held at 340 kPa and 225 K, how many moles do I have?
0.08 mol
0.17 mol
5.99 mol
13.09 mol
1.9 moles of xenon gas is held at 500kPa with a volume of 50dm3. What is the temperature?
231.4 K
1309.5 K
1309.5 oC
504.4 K
My hydrogen-powered car has 3 moles of H, of 0.06m3 and it's at 400K, what is the pressure?
1247900 Pa
5 kPa
150 kPa
166 kPa
If I have 21 moles of iodine gas held at 7800KPa and 900 K, what is the volume of the iodine?
2.01 dm3
2.01 m3
20.1 dm3
14.1 dm3
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