Question

30 mL of sodium carbonate solution is mixed with 20 mL of 0.8 N sulphuric acid. The resultant solution needed 20 mL of 0.7 N hydrochloric acid solution for complete neutralisation. Determine the strength of the sodium carbonate in gram per litre. (Take sodium carbonate to be anhydrous.)


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Answer 1

Answer:

Simplest ratio = \frac{14}{11}

11

14

This question try to say that:

There is an alloy (Homogeneous mixture) of copper and tin

Copper present in alloy = 7/2 gm = 3.5 gm

Tin present in alloy = 11/4 = 2.75 gm

∴ Ratio = (7/2) ÷ (11/4) = 7 × 2/11 = 14/11