Answer: 11.2 grams
Explanation:
The balanced chemical equation for reaction is:
To calculate the moles, we use the equation:
a) moles of
According to stoichiometry :
As sulfuric acid is in excess , the limiting reagent is barium chloride as it limits the formation of product.
1 mole of produces= 1 mole of
Thus 0.0480 moles of require=
of
Mass of
Thus 11.2 g of barium sulfate are produced if 10.0 grams of barium chloride are reacted is excess sulfuric acid
Answer: The pH is 1.69897 and the solution is acid.
Explanation:
The complete neutralization reaction will be:
→
In consequence, if we add 0.03 mol of HCl and 0.01 mol of NaOH, we are going to have an excess of 0.02 mol of HCl that is not going to react. Further, the resulting solution will have an acidic character.
On the other hand, for obtaining the pH, we use the formula:
Where [H+] is expressed in molar concentration.
As HCl is a strong acid, when it is dissolved the H+ ions are completely dissociated and the concentration of HCl in excess is the same of H+ ions.
Before using the formula, we have to calculate the molar concentration of H+ ions, dividing 0.02 mol (HCl in excess) between 1 L; so the concentration of H+ ions is 0.02 M.
Finally, the pH will be: