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Mg(s) + H2SO4 -----> MgSO4 + H2
Githiari answered the question on October 11, 2017 at 14:09
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Give two tests for acidic substances
Date posted: October 11, 2017. Answers (1)
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Give the colour observed when a litmus paper is dropped into the solutions of the following
i)Distilled water
ii)sour milk
iii)Lemon juice
Date posted: October 11, 2017. Answers (1)
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Distinguish between an acid and a base
Date posted: October 11, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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Date posted: October 8, 2017. Answers (1)
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Date posted: October 8, 2017. Answers (1)
- Sodium is highly electropositive,hence it can only be isolated by electrolysis(a)Name the major ore from which sodium is extracted(b)why should ore be in molten...(Solved)
Sodium is highly electropositive,hence it can only be isolated by electrolysis
(a)Name the major ore from which sodium is extracted
(b)why should ore be in molten form before electrolysis
(c)Give the detrimental effect on the enviroment that may result from the extraction of sodium
Date posted: October 6, 2017. Answers (1)
- Sodium is highly electropositive,hence it can only be isolated by electrolysis(a)Name the major ore from which sodium is extracted(b)why should ore be in molten...(Solved)
Sodium is highly electropositive,hence it can only be isolated by electrolysis
(a)Name the major ore from which sodium is extracted
(b)why should ore be in molten form before electrolysis
(c)Give the detrimental effect on the environment that may result from the extraction of sodium
Date posted: October 6, 2017. Answers (1)
- (a)Patients with heart burn are advised to take milk of magnesia.Explain(b)Write an ionic equation between (ii)hydroxide and dillute sulphuric (vi)acid(Solved)
(a)Patients with heart burn are advised to take milk of magnesia.Explain
(b)Write an ionic equation between (ii)hydroxide and dillute sulphuric (vi)acid
Date posted: October 6, 2017. Answers (1)
- Propanol and butanol are third and fourth members respectively of the same homologous series.State and explain how their boiling point compare(Solved)
Propanol and butanol are third and fourth members respectively of the same homologous series.State and explain how their boiling point compare
Date posted: October 6, 2017. Answers (1)
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Date posted: October 6, 2017. Answers (1)
- (a)Phosphorus has melting point of 40o and 590o.Explain
(B)Why is phosphorus stored under water ...(Solved)
(a)Phosphorus has melting point of 40o and 590o.Explain
(B)Why is phosphorus stored under water
Date posted: October 6, 2017. Answers (1)
- When lead nitrate and sodium sulphate react, a white precipitate is formed. (i)Identify the white precipitate.(ii) Write an ionic equation of the reaction(Solved)
When lead nitrate and sodium sulphate react, a white precipitate is formed. (i)Identify the white precipitate.(ii) Write an ionic equation of the reaction
Date posted: October 5, 2017. Answers (1)
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Starting with copper metal, describe how you can prepare solid copper (ii) carbonate
Date posted: October 5, 2017. Answers (1)
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What observation will be made when a few drops of concentrated sulphuric (VI) acid are added to crystals of sugar? Explain your answer
Date posted: October 4, 2017. Answers (1)
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Explain one way in which sulphur (IV) oxide is a pollutant
Date posted: October 4, 2017. Answers (1)
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The molar enthalpy of neutralisation between hydrochloric acid and ammonia solution was found to be -52.2 kj mol4, while that of hydrochloric acid and sodium hydroxide was 57.1 kJ mol-1. Explain the difference in these values.
Date posted: October 4, 2017. Answers (1)
- What is meant by the term 'Enthalpy of formation'? (Solved)
What is meant by the term 'Enthalpy of formation'?
Date posted: October 4, 2017. Answers (1)
- Element M reacts with water at room temperature to produce 0.2 dm3 of gas. Determine the mass of M which was...(Solved)
Element M reacts with water at room temperature to produce 0.2 dm3 of gas. Determine the mass of M which was reacted with water. (Molar gas volume at room temperature is 24 dm3, Relative atomic mass of M = 7).
Date posted: October 4, 2017. Answers (1)
- A solution was made by dissolving 8.2g of calcium nitrate to give 2 litres of solution. (Ca = 40.0; N = 14.0;...(Solved)
A solution was made by dissolving 8.2g of calcium nitrate to give 2 litres of solution. (Ca = 40.0; N = 14.0; O = 16.0).
Determine the concentration of nitrate ions in moles per litre
Date posted: October 4, 2017. Answers (1)