- Mix/react 50cm³ of 0.5M H2SO4 or 25cm³ of 1M H2SO4 solution to obtain a neutral solution of K2SO4.
- Heat to evaporate some water.
- Cool slowly to crystallize the salt.
sharon kalunda answered the question on March 28, 2019 at 10:40
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What is meant by the term basicity of an acid.
Date posted: March 28, 2019. Answers (1)
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When an electric current of 0.5A was passed through a molten chloride of J for 32 minutes and 10 seconds, a mass of 0.44g of J was deposited at the cathode. (IF = 96500C).
(a) Calculate the quantity of electricity used.
(b) Determine the value of x if the ion of metal J is represented as Jx+.
(R.A.M of J = 44).
Date posted: March 28, 2019. Answers (1)
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Study the information below and answer the questions that follow.
(a) Name the enthalpies H1 and H2.
(b) Determine the enthalpy for the reaction:
Date posted: March 28, 2019. Answers (1)
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(Solved)
Using electrons in the outermost energy level, draw the dot (.) and cross (X) diagrams to represent bonding in.
a)(i) C2H6 (C = 6, H = 1)
(ii) NH4Cl (N = 7, H = l, Cl = 17)
b)The formula of a complex ion is 
name the type of bond that is likely to exist between copper and
ammonia in the complex.
Date posted: March 28, 2019. Answers (1)
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Date posted: March 28, 2019. Answers (1)
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A certain carbonate, JCO3, reacts with dilute hydrochloric acid according to the equation below.
If 1gof the carbonate reacts completely with 20cm³ of 1M hydrochloric acid, calculate the relative atomic mass of J. (C = 12, O = 16).
Date posted: March 28, 2019. Answers (1)
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The thermodynamic equation for the formation of ammonia in the Haber process is:
State and explain one way in which the yield of ammonia can be increased.
Date posted: March 28, 2019. Answers (1)
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(a) Write an equation to show how M form an ion.
(b) Write the formula of the chloride...(Solved)
A metal oxide has a formula M2 O3.
(a) Write an equation to show how M form an ion.
(b) Write the formula of the chloride of M.
Date posted: March 28, 2019. Answers (1)
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Date posted: March 28, 2019. Answers (1)
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Find the value of M and n.
Date posted: March 28, 2019. Answers (1)
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The flow chart below gives some reactions starting with ethane. Study it and answer the questions that follow.
(a) Draw the structure of compounds:
P:
Q:
(b) Write the name of Compound R.
Date posted: March 28, 2019. Answers (1)
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An approximately X molar solution of potassium managanate (VII) solution was standardized against precisely 0.1M iron (II) ammonium sulphate [(NH4)3 Fe (SO4)2. 6H2O] solution. 25.0cm³ of the solution of the iron (II) salt were oxidized by 24.15cm³ of the manganate (VII) solution. The equation of the reaction is:
What is the molarity of the potassium manganate (III) solution?
Date posted: March 28, 2019. Answers (1)
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An ion of element X is represented as:
(i) Write electronic configuration of ion of X.
(ii) To which group does element X belong?
Date posted: March 28, 2019. Answers (1)
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The apparatus below was used to separate a mixture of liquid A and B.
(i) State two properties of the liquids that make it possible to separate them are using such apparatus.
(ii) Give the name of the above apparatus.
Date posted: March 28, 2019. Answers (1)
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State the conditions under which flame I is produced in Bunsen burner.
Date posted: March 28, 2019. Answers (1)
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Study the following reaction scheme for the extraction of zinc metal and then answer the questions that follow.
(a) Name two chief ores from which zinc can be extracted
(b) (i) Name the reducing agents used in the reduction chamber.
(ii) Write the equations for the reduction process to obtain zinc
(c) Identify the following:
Solid K
Liquid L
Date posted: March 28, 2019. Answers (1)
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When electric current is passed through Copper (II) sulphate solution for several hours as shown in the diagram below, a gas that relights a glowing splint is produced at electrode R.
(i) Which of the electrodes is the cathode? Give a reason.
(ii) State and explain the observations that would be made at the electrodes.
Date posted: March 28, 2019. Answers (1)
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The table below gives reduction potentials obtained when the half – cells for each of the metals represented by letters,V,W,X, Y and Z were connected to a copper half – cell as the reference electrode.
(a) What is metal X likely to be? Give a reason.
(b) Which of the metals cannot be displaced from the solution of its salt by any other metals in the Table? Give a reason.
Date posted: March 28, 2019. Answers (1)
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Date posted: March 28, 2019. Answers (1)