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Predict the effect of an increase in pressure and temperature on the production of ammonia in the reaction: N2(g) + 3H2(g) <-> 2NH3 (g) , where the change in enthalpy is -92.4 kJ

An increase in temperature and an increase in pressure will have contradictory effects on the reaction. The effect of an increase in the temperature of a system, on the equilibrium of a reaction, is dependen...
AS
Answered by Aaron S. • Chemistry tutor
42621 Views

How can I improve my score?

Maths is all about practise. Once you have covered a topic, you should do as many practise questions as possible to help you understand the topic. Always show your working out on your exam paper to gain maxi...
SL
Answered by Samah L. • Maths tutor
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How can I improve my exam technique?

The best way to improve your exam technique is to do past papers under timed conditions. Be strict with yourself and treat it like an actual exam. Then mark your own paper using the official mark scheme and ...
SL
Answered by Samah L. • Chemistry tutor
5878 Views

The curve C has the equation y = 2x^2 -11x + 13. Find the equation of the tangent to C at the point P (2, -1).

The first step is to differentiate the equation of the curve in order to find the gradient of the tangent at the curve. Remember that when differentiating polynomials, we multiply the index of the variable x...
JY
Answered by James Y. • Maths tutor
17741 Views

I'm having trouble getting high marks on my OCR English essays because of poor structure. My teacher says I've got good ideas, but I just can't seem to get the structure right. Can you help?

English essays are a tricky one to nail, but the best way to get high marks on structure is to closely follow the assessment objectives/paragraphs rule. Essentially, there are 4 assessment objectives, as I'm...
JS
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