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Help- science question!!!!?
How many moles of acid do you have if you have 20ml of 2.0M HCl?
in the equation i'm relating this to , will the 2Hcl is this equation make a difference to the amount of moles of acid
2HCl+Na2CO3=2NaCl+H2+CO2
equation- 2HCl+Na2CO3=2NaCl+H2O+CO2
so if you had 5g of sodium carbonate, would that mean that you would 0.047 mol of sodium carbonate,, does that mean that the lr is hcl, and there is an excess of .0027 moles?
2 Answers
- Trevor HLv 71 decade agoFavorite Answer
How many moles of acid do you have if you have 20ml of 2.0M HCl?
20/1000*2.0 = 0.04mol HCl
I do not follow what you mean in your second question:
First: Balanced equation:
2HCl + Na2CO3 → 2NaCl + CO2 + H2O
2mol of HCl will react with 1mol Na2CO3 to produce 2mol NaCl plus 1mol CO2 plus 1mol H2O.
If this is of some value to you, OK, but I really do not know what you want to know.
- Anonymous1 decade ago
20ml is 20cm3.
We convert it into dm3 to calculate the number of moles. (1000cm3 = 1dm3)
So the number of moles is 2.0* (20/1000) = 0.04 mol
The 2HCl is relative in the equation.
So if you have 0.04 mol of HCl, then in proportion, you would get 0.02 mol of Na2CO3.
So 2HCl in the equation won't make a difference.