Question

In: Chemistry

what volume of 0.250 M HNO3 (nitric acid) reacts with 44.8ml of 0.150 M na2co3 (...

what volume of 0.250 M HNO3 (nitric acid) reacts with 44.8ml of 0.150 M na2co3 ( sodium carbonate) in the following equation?

2HNO3(aq)+Na2co3(aq)-------2nano3(aq)+h20+co2

Solutions

Expert Solution

Answer – Given, [HNO3] = 0.250 M , [Na2CO3] = 0.150 M , volume = 44.8 mL

Reaction –

Na2CO3 + 2HNO3 -----> 2 NaNO3 + CO2 + H2O

We need to calculate the moles of Na2CO3

So, moles of Na2CO3 = 0.150 M * 0.0448 L

                                   = 0.00672 moles

From the balanced reaction –

1 moles of Na2CO3 = 2 moles of HNO3

So, 0.00672 moles Na2CO3 = ?

= 0.0134 moles of HNO3

Now we know,

Molarity = moles / L

So, volume (L) = moles / molarity

                        = 0.0134 moles / 0.250 M

                   = 0.0538 L

We know,

1 L = 1000 mL

So, 0.0538 L = ?

= 53.8 mL

53.8 mL of 0.250 M HNO3 (nitric acid) reacts with 44.8ml of 0.150 M Na2CO3.


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