Oquizy

This is the energy graph for Haber Process. Iron catalyst is used. Which statement is true?

Catalyst affects equilibrium position Catalyst reduces activation energy Catalyst speeds up both forward and backward reactions Iron catalyst lowers yield in Haber process

What is the correct interpretation?

At higher temperature, less gas is produced At higher temperature, rate of reaction is slower Gas solubility increases at higher temperature Higher temperature increases reaction rate

What does this bar graph of volume of gas produced against concentration demonstrate?

Higher concentration increases rate of reaction Lower concentration gives more gas Rate increases with decreasing concentration Reaction yield increases with concentration

What does this show?

Activation energy remains unchanged Catalyst adds energy to curve Catalyst removes energy from particles More particles exceed activation energy when catalyst is used

Xinyi is testing rate of reaction for an unknow solid. She uses sample A (powdered solid) and sample B (same mass, large lumps) and obtains this graph.
Which conclusion is correct?

More powder means more product Powder reacts slower Powdered reactant increases rate Surface area has no effect on rate

What does this show?

Activation energy is lower at higher temperature Fewer particles have energy to react at higher temperature Higher temperature increases activation energy More particles have enough energy to react at higher temperature

Quiz: Chemistry - Rate Of Reactions