2SO2(g) + O2(g) → 2SO3. In the reaction above, the s...
2SO2(g) + O2(g) → 2SO3. In the reaction above, the standard heats of formation of SO2(g) and SO3(g) are -297 KJ mol-1 and -396 kJ/mol respectively. The heat change of the reaction is?
-99 kJ mol-
-198 kJ mol-
+198 kJ mol-
+683kJ mol-
Correct answer is B
2SO2 + O2 → 2SO3
2(-297) 2(-396)
-594 -792
Heat change = heat of product - heat of reactants = -792 - (-594) = -198kj mol-
The most common type of chemical reaction which alkanes undergo is ...
The reactivity of fluorine is due to? ...
Which of the following types of reactions takes place between C2H6 and the halogens? ...
The following substances are examples of addition polymer except ...
Which of the following statements about liquids is/are true? I. Liquids maintain their volume a...
What weight of sodium hydroxide is required to make 500 cm3 of 0.2 M solution? (Na = 23, O = 16, ...
What is the electronic configuration of an element represented as 199X?...