Stoichiometry The heat evolved in the combustion of benzene is represented by the equation: C₆H₆ + 7.5 O₂ = 6CO₂ + 3H₂O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C₆H₆ is burnt in an open container, will be __________ kJ/kgmole. -1632.3 +1632.3 -2448.45 +816.15 -1632.3 +1632.3 -2448.45 +816.15 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is 630 380 880 760 630 380 880 760 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The heats of vaporisation of CS₂, C₂H₅OH &H₂O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is CS₂ > C₂H₅OH > H₂O H₂O > CS₂ > C₂H₅OH H₂O > C₂H₅OH > CS₂ CS₂ > H₂O > C₂H₅OH CS₂ > C₂H₅OH > H₂O H₂O > CS₂ > C₂H₅OH H₂O > C₂H₅OH > CS₂ CS₂ > H₂O > C₂H₅OH ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Two solutions A₁ and A₂ have pH value of 2 and 6 respectively. It implies that the solution A₁ is very slightly acidic Both A & C A₁ is more alkaline than solution A₂ A₁ is highly acidic A₁ is very slightly acidic Both A & C A₁ is more alkaline than solution A₂ A₁ is highly acidic ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Number of gm moles of solute dissolved in one litre of a solution is called its Molarity Normality Equivalent weight Molality Molarity Normality Equivalent weight Molality ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The value of gas constant 'R' is __________ kcal/kg.mole.°C. 2.79 1.987 None of these 3.99 2.79 1.987 None of these 3.99 ANSWER DOWNLOAD EXAMIANS APP
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