(i) Calcium carbide – CaC2
(ii) Over water method
(iii) CaC2(s) + 2H2O(s) + 2H2O(l)------>Ca(OH)2(aq) + C2H2(g)
(iv) C2H2 + 2I2 C2H2I2
(v) The reaction if highly exothermic hence sand helps to absorb excess heat.
maurice.mutuku answered the question on October 18, 2019 at 05:33
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The diagram below represents a large-scale fractional distillation plant used to separate the components A, B, C and D in a mixture
The components have the following average relative molecular masses not necessarily in that
order; 282, 184, 44 and 128.
(i) What is the physical state of B at the position marked Q?
(ii) Which component has an average relative molecular mass of 128? Explain
(iii) State with a reason whether C is pure or impure
(iv) Explain how the mixture is separated into its components
(v) Name two naturally occurring mixtures that are separated using this process
Date posted: October 18, 2019. Answers (1)
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Name the type of polymerisation undergone by ethene in the reaction above
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Name reagent and condition necessary for the reaction above to occur(Solved)
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Date posted: October 17, 2019. Answers (1)
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a) Why is cracking necessary?
b) State the...(Solved)
In petrol chemical industries, long chain alkanes are broken down in to simpler substances in a process called cracking
a) Why is cracking necessary?
b) State the two conditions required in cracking
c) Draw the structure of 1-chloro-2, 2-dimethylpropane
Date posted: October 17, 2019. Answers (1)
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CH3CH = CHCH3(g) + H2(g)----->CH3CH2CH2CH3(g)
Name the product formed when but-z-ene reacts with hydrogen gas
Date posted: October 17, 2019. Answers (1)
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(a) What observation would be made in process K?
(b) Name another conditions necessary for process J to take place
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ii)the value of x in H2C2O4xH2O acid
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The relative formula mass of p is 74. Determine its molecular formula. [C=12, H=1,...(Solved)
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Date posted: October 17, 2019. Answers (1)
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(H = 1 , C= 12, O = 16)
Date posted: October 17, 2019. Answers (1)
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i) Explain how zinc protects iron from rusting
ii) Name the process applied in galvanization...(Solved)
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i) Explain how zinc protects iron from rusting
ii) Name the process applied in galvanization of iron with zinc
Date posted: October 17, 2019. Answers (1)
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Date posted: October 17, 2019. Answers (1)
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(Avogadro’s constant = 6.0 x 1023, Mg = 24, Cl = 35.5)(Solved)
How many chloride ions are present in 1.7g of magnesium chloride crystals?
(Avogadro’s constant = 6.0 x 1023, Mg = 24, Cl = 35.5)
Date posted: October 17, 2019. Answers (1)