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. -2448.45 +816.15 +1632.3 -1632.3 -2448.45 +816.15 +1632.3 -1632.3 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times. 70 10 100 20 70 10 100 20 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The atomic heat capacities of all solid elements __________ with decrease in temperature. Approach zero at 0°C Increases Decreases Remains unchanged Approach zero at 0°C Increases Decreases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature. Increases Remains unchanged Decreases Increases linearly Increases Remains unchanged Decreases Increases linearly ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature. Varies linearly Increases Decreases Does not vary Varies linearly Increases Decreases Does not vary ANSWER DOWNLOAD EXAMIANS APP
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