Properties of acids & bases questions

Assignment: Questions on Topic 8.2 : Properties of acids and bases

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Give the equation for the reaction between dilute hydrochloric acid, HCl(aq), and:

i.  potassium hydroxide solution, KOH(aq)

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ii.  ammonia, NH3(aq)

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iii. copper(II) oxide, CuO(s)

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iv. sodium hydrogencarbonate, NaHCO3(s)

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v.  calcium carbonate, CaCO3(s)

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vi. zinc metal, Zn(s)
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Distinguish between the terms base and alkali.

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Describe two different test-tube reactions to illustrate that a solution of sodium hydroxide, NaOH(aq) is basic.

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Give the equation for the reaction which occurs when solid ammonium chloride, NH4Cl(s) is heated with potassium hydroxide solution, KOH(aq).

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The image below shows the colour of universal indicator paper at different pH values.

i.  Deduce the approximate colour when a strip of the indicator paper is placed in a dilute solution of ammonia.

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ii. If nitric acid is added in excess to this solution how would you expect the colour of the indicator paper to change?

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State the equation for the reaction between magnesium oxide, MgO(s) and sulfuric acid, H2SO4(aq).

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