Answer: The volume of HBr solution comes out to be 238.1 mL
Explanation:
To calculate the concentration of acid, we use the equation given by 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 which is [tex]HBr[/tex]
[tex]n_2,M_2\text{ and }V_2[/tex] are the n-factor, molarity and volume of base which is [tex]Ca(OH)_2[/tex]
We are given:
[tex]n_1=1\\M_1=0.0105M\\V_1=?mL\\n_2=2\\M_2=0.010M\\V_2=125mL[/tex]
Putting values in above equation, we get:
[tex]1\times 0.0105\times V_1=2\times 0.010\times 125\\\\V_1=238.1mL[/tex]
Hence, the volume of HBr solution comes out to be 238.1 mL
