Q13 of 270 Page 66

Write word equations and then balanced equations for the reactions taking place when:

(a) dilutesulphuric acid reacts with zinc granules.


(b) dilute hydrochloric acid reacts with magnesium ribbon.


(c) dilutesulphuric acid reacts with aluminium powder.


(d) dilute hydrochloric acid reacts with iron fillings.




More from this chapter

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11 Name one animal and one plant whose stings contain formic acid (or methanoic acid). 12 How is the concentration of hydronium ions (H3O+) affected when the solution of an acid is diluted? 14 Complete and balance the following chemical equations:

 15 Fill in the blanks in the following sentences:

(a) Acid have a --------tasks and they turn -------litmus to --------


(b) Substance do not show their acidic properties without ----------


(c) Acids produce ------- ions on dissolving in water.


(d) Those substance whose smell (or odour) changes in acidic or basic solutions are called ------indicators.


(e) Onion and vanilla extract are ------ indicators.