AS/2 Arabic inquiryWatch
I don't know anything specific about the difficulty. But it's obviously recommended that you have a good prior knowledge of the language, as is recommended for all A-level languages.
Is the Arabic course for edexcel gce, a one year one. the specification gives it in unit1 & 2 + how hard is it in terms of self teaching ?
With A2 same kind of start with questions on a passage do tashkiil over a paragraph ie add vowel signs over words, translate a longer paragraph, and two essays at the end, both essays have questions on literature but there are options outside of literature like the one we were asked was how news coverage on arabic media has changed.
So you need to have fairly strong grasp of arabic.
Best thing is to look up past edexcel papers and see how you do and how you can answer them.