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Bethan prepared some ethoxyethane (line 6) by reacting ethanol with concentrated sulfuric acid. She used 69g of ethanol (Mr=46) and obtained a 45% yield of ethoxyethane (Mr=74). Calculate the mass of ethoxyethane obtained.

  1. Equation from line 6 is: 2 (ethanol) -------> 1 (ethoxyethane)
    2. The ratio of reaction is 2:1. This is the ratio of moles not mass, i.e., 2 moles of ethanol give 1 ...
SD
2454 Views

Give the name of the monomer used to make poly(chloroethene). And describe how monomer molecules form polymer molecules.

  1. Briefly explain the etymology of hydrocarbon names and how polymers are named. The answer is therfore, chloroethene.
    2. Draw a structure for chloroethene and show in diagram how chloroethene p...
SD
13852 Views

Explain the trends in electronegativity in the periodic table

As you go across the period from left to right (excluding noble gases), electronegativity increases. This is because the nuclear charge increases (Atomic Number/number of protons) and atomic radius decrea...

AP
Answered by Anika P. Chemistry tutor
4119 Views

Draw a Lewis structure of phosphine, and state the hybridisation of the phosphorus atom.

Draw a diagram of PH3Hybridisation: sp3

BD
3140 Views

What is the First Law of Thermodynamics?

The First Law of Thermodynamics is that energy cannot be created or destroyed, it can only change from one form to another. For example, a boulder perched at the top of a hill has gravitational potential ...

JD
Answered by Jade D. Chemistry tutor
2595 Views

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