Worksheets14- MOLE CALCULATION PYQ MCQ
Total questions: 10
Worksheet time: 20mins
What is the concentration of iodine molecules, I2, in a solution containing 2.54 g of iodine in 250 cm3 of solution? N2010, Q11
0.01 mol / dm3
0.02 mol / dm3
0.04 mol / dm3
0.08 mol / dm3
What is the mass of oxygen contained in 72 g of pure water? [Relative atomic masses: H = 1; O = 16] (J2011, Q6)
16g
32g
64g
70g
The equation for the reaction between calcium carbonate and hydrochloric acid is shown.
CaCO3(s) + 2HCl (aq) → CaCl2(aq) + H2O(l) + CO2(g)
How many moles of calcium carbonate will give 24 cm3 of carbon dioxide when reacted with an excess of the acid? (J2011, Q9)
(Assume one mole of carbon dioxide occupies 24 dm3.)
1 mol
0.1 mol
0.01 mol
0.001
The empirical formula of a liquid compound is C2H4O.
To find the empirical formula, it is necessary to know the ..... (J2011, Q11)
density of the compound.
percentage composition of the compound.
relative molecular mass of the compound.
volume occupied by 1 mole of the compound.
What is the relative molecular mass Mr of CuSO4.5H2O? N2011, Q11
160
178
186
250
What is the ratio of the number of molecules in 71 g of gaseous chlorine to the number of molecules in 2 g of gaseous hydrogen? [Relative atomic masses Ar : H, 1: Cl, 35.5] N2011, Q12
1 : 1
1 : 2
2 : 1
71 : 2
0.5 mol / dm3 hydrochloric acid is added gradually to a flask containing 20 cm3 of 2 mol / dm3 sodium hydroxide solution. What is the total volume, in cm3, of the mixture in the flask when the solution is just neutral? (N2012, Q13)
30
40
60
100
Two of the reactions used in the manufacture of nitric acid, HNO3, are shown.
2NO + O2 → 2NO2
4NO2 + 2H2O + O2 → 4HNO3
What is the maximum number of moles of nitric acid which could be formed from one mole of
nitrogen monoxide, NO? (N2012, Q14)
0.5
1.0
2.0
4.0
If 1 mole of each alkane is completely burned in oxygen, which will provide 7 moles of products? (N2012, Q37)
CH4
C2H6
C3H8
C4H10
An alcohol contains 60% carbon by mass.
What is its formula?
CH3OH
C2H5OH
C3H7OH
C4H9OH
