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Chemistry
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What are the differences between exothermic and endothermic reactions?

Reactions are all about the formation and the breaking of bonds between atoms. The formation of bonds within a system causes energy to be released whilst the breaking of bonds requires energy to be applie...

WL
Answered by William L. Chemistry tutor
5468 Views

But-1-ene reacts with HBr to form a saturated compound, name and draw the mechanism, then explain how three isomeric products are formed.

The mechanism is an Electrophilic Addition. Explanation of the drawing: Draw a curly arrow from the but-1-ene double bond to the H and a curly arrow from the HBr bond to Br; forming a secondary carbocatio...

CC
Answered by Charles C. Chemistry tutor
32288 Views

For the reaction 2H2 + O2 -- 2H2O, how do I give an equation for the equilibrium constant in terms of the concentrations of products and reactants involved?

For any reaction, the equilibrium constant is given in the form: K = [products] / [reactants]

Where [ ] is used to denote the concentration of the species. 

Therefore we can substitute in fo...

LS
Answered by Liam S. Chemistry tutor
24685 Views

Define the standard enthalpy of formation

The standard enthalpy of formation of a substance is the enthalpy change when one mole of that substance is formed from the most stable allotropes of its elements in their standard states...

AG
3464 Views

Name two types of chemical bonds and describe each type in terms of their bonding structure and properties

Ionic Bonding 

Ionic bonding occurs between positive ions (cations) and negative ions (anions), which are attracted to each other through their oppisite charges. The resulting comp...

AG
2592 Views

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