Stoichiometry In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water? (atomic weight of calcium = 40) 1120 0.4 2240 4480 1120 0.4 2240 4480 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies 0 < Xw < 0.5 Xw = 0.5 Xw = 1.0 0.5 < Xw < 1.0 0 < Xw < 0.5 Xw = 0.5 Xw = 1.0 0.5 < Xw < 1.0 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry On mixing 56 gm of CaO with 63 gm of HNO₃, the amount of Ca(NO₃)₂ formed is __________ gm. 41 164 8.2 82 41 164 8.2 82 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pick out the wrong unit conversion. None of these 1 atm. = 760 mm Hg = 29.92 inch Hg = 14.7 psi = 1.013 bar = 1.013 kgf/cm² 1 kPa = 100 bar 1 mm Hg = 1 torr = 133.3 Pa None of these 1 atm. = 760 mm Hg = 29.92 inch Hg = 14.7 psi = 1.013 bar = 1.013 kgf/cm² 1 kPa = 100 bar 1 mm Hg = 1 torr = 133.3 Pa ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following is followed by an ideal solution ? Raoult's law Amgat's law Trouton's rule Boyle's law Raoult's law Amgat's law Trouton's rule Boyle's law ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour? 15 5 20 10 15 5 20 10 ANSWER DOWNLOAD EXAMIANS APP
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