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a) Sulphur (IV) oxide is oxidized. This is because oxidation state of sulphur increase from +4 to +6
b) It is used as a food preservative
johnmulu answered the question on February 7, 2017 at 09:03
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Name two reagents that can be used to prepare hydrogen sulphide in the laboratory
Date posted: February 7, 2017. Answers (1)
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Crude oil contains sulphur. What would be effect to the environment of using fuel containing sulphur?
Date posted: February 7, 2017. Answers (1)
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a) State the observation made at the end of the experiment when a mixture of iron powder and sulphur is heated in a test tube
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Date posted: February 7, 2017. Answers (1)
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Date posted: February 7, 2017. Answers (1)
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Date posted: February 7, 2017. Answers (1)
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When hydrogen sulphide gas was bubbled into an aqueous solution of iron (III) chloride, a yellow precipitate was deposited.
a) State another observation made
b) Write an equation for the reaction that took place
c) What type reaction was undergone by hydrogen sulphide in this reaction?
Date posted: February 7, 2017. Answers (1)
- In an experiment to study the properties of concentrated sulphuric (IV) acid, a mixture of the acid and wood charcoal was heated in a boiling tube(Solved)
In an experiment to study the properties of concentrated sulphuric (IV) acid, a mixture of the acid and wood charcoal was heated in a boiling tube.
a) Write the equation of the reaction that took place in the boiling tube
b) Using oxidation numbers, show that reduction and oxidation reactions took place in the boiling tube.
Date posted: February 7, 2017. Answers (1)
- In an experiment, a gas jar containing moist sulphur (IV) oxide was inverted over another gas jar containing hydrogen sulphide gas.(Solved)
In an experiment, a gas jar containing moist sulphur (IV) oxide was inverted over another gas jar containing hydrogen sulphide gas.
a) state and explain the observation that was made
b) state the precaution that should be taken when carrying out this experiment
Date posted: February 7, 2017. Answers (1)
- Oleum (H2S2O7)is an intermediate product in the industrial manufacture of sulphuric acid(Solved)
Oleum (H2S2O7)is an intermediate product in the industrial manufacture of sulphuric acid.
a) How is oleum converted into sulphuric (VI) acid
b) Give one use of sulphuric (VI) acid
Date posted: February 7, 2017. Answers (1)
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a) Name one crystalline form of sulphur
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Date posted: February 6, 2017. Answers (1)
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Date posted: February 6, 2017. Answers (1)
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When a sample of concentrated sulphuric (IV) acid was left in an open beaker in a room for two days, the volume was found to have increased slightly.
a) What property of concentrated sulphuric (IV) acid is shown by the above reaction
b) State one use of concentrated sulphuric (IV) acid that depends on the property named
Date posted: February 6, 2017. Answers (1)
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Date posted: February 6, 2017. Answers (1)
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Date posted: February 6, 2017. Answers (1)
- When a solid sample of sulphur is heated in a test tube, it changes into a liquid which flows easily(Solved)
When a solid sample of sulphur is heated in a test tube, it changes into a liquid which flows easily. On further heating, the liquid darkens and does not flow easily. Explain these observations.
Date posted: February 6, 2017. Answers (1)
- In an attempt to prepare sulphur (IV) oxide gas, dilute sulphuric (VI) acid was reacted with barium sulphite(Solved)
In an attempt to prepare sulphur (IV) oxide gas, dilute sulphuric (VI) acid was reacted with barium sulphite. The yield of sulphur (IV) oxide was found to be negligible. Explain
Date posted: February 6, 2017. Answers (1)
- State and explain the observation that would be made when a few drops of concentrated sulphuric (VI) acid are added to a small sample of hydrated copper (II) sulphate.(Solved)
State and explain the observation that would be made when a few drops of concentrated sulphuric (VI) acid are added to a small sample of hydrated copper (II) sulphate.
Date posted: February 6, 2017. Answers (1)
- State what would be observed when dilute hydrochloric acid is added to the products formed when a mixture of iron filling and sulphur is heated (Solved)
State what would be observed when dilute hydrochloric acid is added to the products formed when a mixture of iron filling and sulphur is heated.
Date posted: February 6, 2017. Answers (1)
- On heating a pale green solid K, carbon (IV) oxide gas and black solid M were formed. On reacting K with dilute hydrochloric acid, carbon (IV) oxide gas and green solution S were formed(Solved)
On heating a pale green solid K, carbon (IV) oxide gas and black solid M were formed. On reacting K with dilute hydrochloric acid, carbon (IV) oxide gas and green solution S were formed. When excess aqueous ammonia was added to solution S, a deep blue solution was formed.
a) Identify the cation in solid K
b) Identify the two anions in solution S
Date posted: February 6, 2017. Answers (1)
- Describe how formation of nitrogen (II) oxide in the internal combustion engine leads to gaseous pollution(Solved)
Describe how formation of nitrogen (II) oxide in the internal combustion engine leads to gaseous pollution.
Date posted: February 6, 2017. Answers (1)