Top answers

For the equilibrium reaction PCl5(g) (equilibrium arrow)-> PCl3(g) + Cl2(g) explain the effect of increasing the concentration of Chlorine gas using the equilibrium constant.

Kc=[Cl2(g)][PCl3(g)]/[PCl5(g)] for this reaction. The rate constant is not affected by changes in concentration and hence an increase in the concentration of Chlorine causes an increase in the concentration ...
JH
Answered by James H. • Chemistry tutor
15266 Views

A general function f(x) has the property f(-x)=-f(x). State a trigonometric function with this property and explain using the Maclaurin series expansion for this function why this property holds. Write down the integral in the limits -q to q of f(x) wrt x

Note that this property is the definition of an odd function, or draw a sketch of what this looks like in general about the horizontal axis. E.g. f(x)=sin(x) which has the expansion f(x)=x-((x^3)/3!)+((x^5)/...
JH
Answered by James H. • Maths tutor
4332 Views

What happens to the pressure inside a gas-filled ball when the temperature is increased? Explain your answer, stating the assumption made.

From definition of pressure have P=F/A (in reality for a ball we are talking about infinitesimal areas, but the general definition is sufficient at this level). Assume that the area of the surface under cons...
JH
Answered by James H. • Physics tutor
2451 Views

The external environment in which businesses operate can have a significant effect on their success. To what extent do you think that the external environments in markets are favorable for businesses at the moment? Justify your answer with reference to ex

The ‘external environment’ is the combination of factors that occur outside of the business. These include: political, economical, social, technological, legal and environmental factors. In terms of the exte...
AR
4340 Views

How do I know if an enthalpy change should be positive or negative?

A negative enthalpy change represents an exothermic change where energy is released from the reaction, a positive enthalpy change represents an endothermic reaction where energy is taken in from the surround...
AS
Answered by Alex S. • Chemistry tutor
94005 Views