It is called a cycle because it is repetitive, therefore making it a cycle (or almost never ending)
Answer:
The equilibrium position will shift towards the lefthand side.
Explanation:
[CoCl4] 2- (aq) + 6H2O (l) ⇌ [Co(H2O)6] 2+ (aq) + 4 Cl- (aq)
The equation written above in exothermic as written. That is, the forward reaction is exothermic. The equilibrium position is observable by monitoring the colour change of the solution. At the left hand side, the solution is blue but at the right hand side the solution is pink. Addition of heat (in a hot water bath) will shift the equilibrium towards the left hand side, that is formation of more [CoCl4] 2- making the solution to appear blue in colour.
The reaction is called exothermic because an exothermic process releases heat, causing the temperature of the immediate surroundings to rise and thats exactly what charcoal does when burned.
I believe the correct answer from the choices listed above is the last option. Lactase and carbonic anhydrase are examples of enzymes. Lactase is an enzyme produced by a lot of organisms. Carbonic anhydrases, on the other hand, is a family of enzymes that catalyze the rapid interconversion of CO2 and H2O to bicarbonate.
