Respuesta :
Answer:
a) NaOH volume at the equivalence point is 100 ml.
b) NaOH volume at the equivalence point is 45 ml.
Explanation:
To calculate the concentration of acid, we use the equation given y neutralization reaction:
[tex]n_1M_1V_1=n_2M_2V_2[/tex]
where,
[tex]n_1,M_1\text{ and }V_1[/tex] are the n-factor, molarity and volume of acid.
[tex]n_2,M_2\text{ and }V_2[/tex] are the n-factor, molarity and volume of base
a) If a 0.100 M NaOH (aq) solution is used to titrated with 50.0 mL of 0.200 M HBr(aq).
We are given:
[tex]n_1=1\\M_1=0.200M\\V_1=50.0mL\\n_2=1\\M_2=0.100M\\V_2=?mL[/tex]
Putting values in above equation, we get:
[tex]1\times 0.200M\times 50.0 mL=1\times 0.100 M\times V_2\\\\V_2=100 mL[/tex]
b) If a 0.100 M NaOH (aq) solution is used to titrated with 30.0 mL of 0.150 M [tex]HNO_3[/tex](aq).
We are given:
[tex]n_1=1\\M_1=0.150M\\V_1=30.0mL\\n_2=1\\M_2=0.100M\\V_2=?mL[/tex]
Putting values in above equation, we get:
[tex]1\times 0.150M\times 30.0 mL=1\times 0.100 M\times V_2\\\\V_2=45 mL[/tex]
