The industrial synthesis of ammonia is spontaneous.
to to prove this one calculate the gibbs free energy(delta G)
= delta G = Delta H -T delta s
delta H = -92.2 kj in joules -92.2 x1000 =-92200j
delta s = -199j/k
T= 25+273= 298k
delta G is therefore= -92200-298(-199)=-32898j
since delta G is negative the reaction is therefore spontaneous
Ra(s) + H₂O(g) → Ra(OH)₂ (aq) + H₂ (g)
<u>Explanation:</u>
Radioactive radium reacts easily with water produces radium hydroxide and hydrogen gas. In this reaction, Radium is sin solid state reacts with the water in the gaseous state to produces aqueous radium hydroxide and the hydrogen gas. This reaction occurs rapidly than in Barium. We can write this reaction as,
Radium(s) + water(g) → Radium hydroxide (aq) + Hydrogen (gas)
This can be represented using the symbols as,
Ra(s) + H₂O(g) → Ra(OH)₂ (aq) + H₂ (g)
Thus the above process can be expressed with such chemical reaction.
Only the amount of gas is held constant.
From start:
Joule, J, calorie,
Example 1: 120 J / 4.184 = 28.68 cal
Example 2: 1200 cal * 4.184 = 5020.8 J
