Question

Calculate the moles of sodium carbonate you would have in 10cm3 of a 0.25M solution.

Answer 1

Answer:

Well, you forgot to provide the amount of hydrochloric acid added, so it is impossible to do the actual calculation…

First, you need to write down the equation for the reaction: Na2CO3 + 2HCl ->2 NaCl + H2O + CO2

Now, we can see that we need two equivalents of hydrochloric acid for one equivalent of sodium carbonate.

Calculate the number of moles of hydrochloric acid. For this, you need the concentration and the volume. If you have the concentration, divide it by 2 to get the number of moles of sodium carbonate. Now divide the number of moles of sodium carbonate by the volume, and you have your concentration.