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0.1 M sodium hydroxide (strong base) is added to 25 ml of 0.1 M of ethanoic acid (weak acid) in a titration. What is the pH at equivalence?

The equivalence point is reached when the titrant added neutralizes the titrand. It is thought that when a solution is neutral it would have a pH of 7. However, the combination of a weak acid and a strong...

Answered by Sean P. • Chemistry tutor

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How do I write an HL paper 3?

Use the first 5 minutes wisely. You're not allowed to write anything down yet, so read through the questions.Read the questions carefully - you have five full minutes. Make sure you read ...

Answered by Emily W. • History tutor

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What were the conditions in Germany that led to Hitler's rise to power?

Consider first of all that Hitler rose to power not because of shared ideology, but because of fear. Hitler's voters were scared of what Germany was facing. The Weimar Republic was doomed to begin with be...

Answered by Emily W. • History tutor

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How important was force in two authoritarian states?

Could look at:How the word 'establishment' meant expansion of control as well as rise to power Nazi GermanyThe role of the SSThe role of the SAThe role of the secret police (Gesta...

Answered by Lottie W. • History tutor

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A geometric sequence has all its terms positive. The first term is 7 and the third term is 28.

THIS IS FOR MATHS STUDIES, NOT MATHS SLThe question is from the 2014 specimen paper
First, find the common ratio:U1 = 7U3 = 28
(Identify Formula): Un = U1 x r^n-1 U3 ...

Answered by Lottie W. • Maths tutor

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