Questions and answers by

opera

Questions (3)

how can i calculate the volume of 3 M HCl needed to change the ph of 75 ml of undiluted buffer by one ph unit (buffer capacity).
1. 6 answers
2. 1,142 views
question regarding equivalence point and end point calculations:how can i calculate the concentration of an unknown using a
1. 2 answers
2. 834 views
how can i calculate the ph of a stock acetic acid solution given the following: pKa of acetic acid=4.75, concentration of acetic
1. 4 answers
2. 554 views

what i did was calculate the moles of the acid and acetate: acetic acid: n=(1.1009 x .1L x .075L) / .2L =0.04 did the same for sodium acetate: n=0.03 then 3.75=4.75+log (0.03-x)/(0.04+x) x= moles of HCl then to calculate volume of hcl = moles of hcl/3M not
100 ml of acetic acid and 100ml of sodium acetate were mixed (which is the buffer solution). then hcl (3 M) was added to 75 ml of the buffer solution
no worries i am not in a rush, thanks for your help
got it, thank you!
25 mL of 0.09607 M ammonia was titrated with unknown hydrochloric acid
im still not sure how to get Kb. so for ka i did 10^-4.75 and got 1.78x10^-5. then using the ice table and the 1.1009 for HA, i got x=4.4x10^-3. then to get the ph, i did -log(x) = 2.35. do i use the same ka of 1.78x10^-5 for kb?

Ask a New Question