Question

34
Mr. Rajesh assumed that the time taken for 10 cm' of CO2 to be formed from a reaction
between equal volume of acid solutions and 1.0 g of calcium carbonate is affected by the
pH of acid solution. Mr. Rajesh tested his hypothesis and represented his results in the
graph below.
$1
(i)Will lumps of CaCO3 react faster or slower than powdered CaCO3?
(ii) What will be time taken to collect 10cm of CO, at pH = 5.0?
(in)What is the nature of CaCO3 salt and what will happen if acid with pH = 6.5 is added​

Answer 1

Answer:

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