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 +816.15 -1632.3 -2448.45 +1632.3 +816.15 -1632.3 -2448.45 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. 20 10 100 70 20 10 100 70 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The atomic heat capacities of all solid elements __________ with decrease in temperature. Approach zero at 0°C Decreases Increases Remains unchanged Approach zero at 0°C Decreases Increases 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. Remains unchanged Decreases Increases linearly Increases Remains unchanged Decreases Increases linearly Increases 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 Does not vary Decreases Increases Varies linearly Does not vary Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS