The gas given off when NH4Cl is heated with an alkali is?
A. H2 B. Cl2 C. N2 D. NH3 Correct Answer: Option D D. NH3Determine the mass of sulphur (IV) oxide obtained when 91.0g of oxygen reacts completely with sulphur according to the following equation: S(s) + O2(g) → SO2(g) [S = 32; O = 16]
A. 123g B. 139g C. 155g D. 182g Correct Answer: Option D D. 182g Explanation S + O2 → SO2. According to the equation 32g of O2 produced 64g of SO2 therefor 91g of O2 will produce yg of SO2 y = 91/32Calculate the mass of chlorine gas which occupies a volume of 1.12 dm³ a volume of 1.12 dm³ at s.t.p [Cl = 35.5, 1 mole of gas occupies 22.4 dm³ at s. t. p ]
A. 1.80g B. 3.55g C. 7.10g D. 15.50g Correct Answer: Option B B. 3.55g Explanation 1 mole Cl2 occupy 22.4dm³ i.e 2 x 35.5 → 22.4 ; x → 1. 12 :. x = 1.1222.4 x 2 x 35.5 = 3.55What volume of hydrogen will be produced if 100cm³ of ammonia is completely decomposed at constant temperature and pressure? The equation for reaction is 2NH3(g) → N2(g) + 3H2(g)
A. 50cm³ B. 150cm³ C. 200cm³ D. 300cm³ Correct Answer: Option B B. 150cm³Products
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