Recent questions in Chemistry Form 4

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When a current of 0.5 amperes was passed for 32 minutes and 10 seconds through fused chloride of metal P 0.44 of P was deposited. Determine the charge of the ion of metal P. (IF = 96,500C, P =88)

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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The structure below represents a segment of a polymer. Use it to answer the questions that follow.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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Identify the following cleansing agents

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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The table below shows the pH values of solution J to N

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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A white solid L changes to yellow solid R when strongly heated but on cooling becomes white again. When L is reacted with dilute nitric(v) acid effervescence occurs.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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The standard reduction potentials of two half cells are

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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Describe how you would prepare dry sample of lead (II) chloride starting with lead (II) carbonate.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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The table below gives some experimental results on four samples of water. Use the information to answer the questions that follow.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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The lattice energy of sodium bromide and hydration energies of sodium and bromide ions are 733,406 and 335kj/mol respectively.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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Define molar heat solution.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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State the process that takes place when;

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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An ore is suspected to contain mainly sodium. Describe a method that can be used to confirm the presence of sodium in the ore.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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Sodium is extracted from its ore by the electrolysis process. Name the chief ore from which sodium is extracted from.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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State one use of radioactivity in agriculture.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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A radioactive isotope M decays by emitting two alpha and a beta particle to form 206 83Y.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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Given that the structure of soap is C17H35COONa.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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A student fetched water from a river in a limestone area. He used it for washing and realized that it did not lather easily. On boiling, the water lathered easily .When he added washing soda, it again lathered easily

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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Study the following equilibrium equation.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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The standard electrode potentials of a metal H and Iron are given below.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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The diagram below shows the energy changes that occur when sodium chloride dissolves in water. Study it and answer the questions that follow.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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