affention to the stoichiomatry of ths roaction 0.0821 atmlimolK 10. A catalyst i
ID: 590395 • Letter: A
Question
affention to the stoichiomatry of ths roaction 0.0821 atmlimolK 10. A catalyst increases the rate of a reaction by 11. Which of the following is false regarding the ikdine clock kinetics lat? A) 2 1(aq) S,0 (a)) 2 50 (ag) is the balanced net ionic equation for the main reaction B) Idaq) + 2 SO? (aa) 2 ' (aa) + sor(aa) is the balanced net iric equation for the clock reaction C) the clock reaction is the fast reaction D) the rate constant will decrease upon an increase in temperature E) An Arhenius plot is a graph of In(k) on the y avis and 1IT on the x ais. 12. 2.5137g of Mg(NOs)h is added to 25.0 ml of H0 at 22.5C in a calorimeter. The temperature of the the activation energy of the reaction. solution rises to 348C Calculate the heat of the surroundings (Gwr). Cs of water 4.184 JlgC 13. In "How Hot is the Water investigation, you were asked to determine the initial temperature of a sample of water by using thermodynamic relationships. Use this method to solve the following question. The temperature of 500 g of hot water in a calorimeter decreases to 45.0°C after adding 300 g of 20°C cold water. What was the temperature of the hot water in the calorimeter before adding the cold water? [The specific heat of water is 4.184 Mg·°C-1Explanation / Answer
10. Decreasing.
A catalyst is a substance which increases the rate of reaction. it provides alternative route for reaction.
Activation energy is the minimum energy required for reaction takes place by increasing the number of collision between molecules.
For reaction to take place at faster rate you need to increase the number of successful collisions and thus lowers the activation energy. This is possible by way of introducing catalyst in the reaction which lowers activation energy barrier and now more number of molecules will acquire the minimum energy requirement and get converted to product. hence rate of reaction increases
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.