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By considering the mechanism of the two step reaction of butanone and NaBH4 followed by dilute acid, explain why the product has no effect on plane polarised light.

CH 3 -CO-CH 2 -CH 3 + 2[H] --> CH 3 -CHOH-CH 2 -CH 3 NaBH 4 is a reducing agent that effectively produces an H - ion to act as the reducing agent. The H - ion attacks the electrophilic carbon centre (elec...
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Answered by Alex J. • Chemistry tutor
16977 Views

Given that y=(4x+1)^3*sin(2x) , find dy/dx

y=(4x+1)^3 sin(2x) - this is a product of two functions of x. It can be rewritten as y = u(x) v(x) ; where u(x) = (4x+1)^3 and v(x) = sin(2x) Using the product rule: dy/dx = u'(x) v(x) + v'(x) u(x) where the...
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Answered by Chris D. • Maths tutor
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A bag contains red discs, white discs and blue discs. 1/6 of the discs are red, 1/4 of the discs are blue. What is the smallest possible number of white discs?

We are given the fractions representing the number of discs in the bag. When comparing fractions, we should first find a common denomenator for them. The smallest common denomenator for 6 and 4 is 12 (4 3=12...
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Answered by Grimonia C. • Maths tutor
6785 Views

How do I approach analysing a poem?

When you're first given a poem, you may feel that you could never have enough to say to write an essay on it. However, by splitting your preparation into sections and reading it through specifically looking ...
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Answered by Sian H. • English tutor
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Define "prerogative power" and describe the impact of the GCHQ case on our understanding of royal prerogative

Albert Venn Dicey describes prerogative power as “every act which the executive government can lawfully do without the authority of an Act of Parliament.” This definition, accepted by the courts in Council o...
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Answered by ANNA C. • Law tutor
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