a)H2NCH2COOH + H2NCHCH3COOH------->? HNCH2CONHCHCH3CO) + H2
b)Condensation polymerization
Githiari answered the question on September 18, 2017 at 07:02
- Dry carbon (II) oxide gas was passed over heated lead (II) oxide.
(a) Write an equation for the reaction
(b) Give one industrial application of the above...(Solved)
Dry carbon (II) oxide gas was passed over heated lead (II) oxide.
(a) Write an equation for the reaction
(b) Give one industrial application of the above reaction.
(c) Name another gas that can be used in the above reaction.
Date posted: September 18, 2017. Answers (1)
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Date posted: September 14, 2017. Answers (1)
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b)Calculate how long it would take an aqueous gold (III) chloride cell to coat 2.5 g of gold
on a...(Solved)
a)State the Faraday’s law of electrolysis
b)Calculate how long it would take an aqueous gold (III) chloride cell to coat 2.5 g of gold
on a bracelet using a current of 2.5 A. The half reaction has been provided for you.
c)Two half-cells are connected under standard conditions to make an electrochemical cell.
The two half-cells are a copper-copper (I) ion (Cu/Cu+) and an aluminum-aluminum ion (Al/Al3+). Using your the Standard Reduction Potentials below answer.
Al3+(aq) + 3e- → Al(s) -1.66 V
Cu2+(aq) + e- → Cu(s) 0.52 V
i)Write the cell diagram for the cell obtained when the two half cells are connected
ii)Identify which reaction is the anode and which is the cathode.
(iii)Calculate the emf for the cell
(iv)Write the overall balanced redox reaction for the electrochemical cell
d)An excess of copper solid is dropped into a solution which contains AgNO3 , Fe (NO3)3 and Zn (NO3)2. Write the ionic equations for any reduction half cell-reactions that occur over time under standard conditions
Date posted: September 14, 2017. Answers (1)
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b)Give 2 effects that the process above could have on the environment.
Date posted: September 14, 2017. Answers (1)
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(i)Name the process of formation of the substance above
ii)Identify the two substances from which the substance above is derived...(Solved)
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(i)Name the process of formation of the substance above
ii)Identify the two substances from which the substance above is derived .
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iv)Explain briefly how the soapless detergents given above may be manufactured
Date posted: September 14, 2017. Answers (1)
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Date posted: September 14, 2017. Answers (1)
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Date posted: September 14, 2017. Answers (1)
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B)In an experiment to determine the heat of combustion of methanol. CH3OH, a student was recorded the following requirement the following data
Volume of water =100cm3
Final temperature of water = 22.00c
Initial temperature of water = 36.00c
Final mass of lamp an methanol = 84.75g
Initial mass of lamp and methanol=85.10g
Density of water = 1 g/cm3
(S.H.C of water = 4.23 g-1K-1)
i)Write an equation for the combustion of methanol
(ii) Calculate:
(a) Number of moles of methanol used in this experiment
(b) The heat change for this experiment
(c) The heat of combustion per mole of methanol
(d) Explain why the molar heat of combustion for methanol obtained above is different from the theoretical value.
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(f) Outline two disadvantages of using hydrogen as a source of fuel.
Date posted: September 14, 2017. Answers (1)
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Date posted: September 14, 2017. Answers (1)
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A piece of iron is coated with metal G. If the coating is scratched, would the iron be protected from rusting? Explain.
Date posted: September 13, 2017. Answers (1)