I'm not getting the right answers for the pH, [H2A], and [HA^-] in part a (0.135 M solution for H2A) For H2A, I did 3.9E-2=x^2/(.135-x) Using the quadratic formula: x^2+.039x-.005265=0 x=.06725 [H^+]=[HA^-]=.06725 M pH=-log(.06725)=1.17 Finding [H2A]=.135 M-.06725 M=.06775...
Given a diprotic acid, H2A, with two ionization constants of Ka1=3.9E-2 and Ka2=5.9E-8. Calculate the pH and molar concentration of each protonated form for a 0.135 M solution of: (a) H2A (b) NaHA (c) Na2A
equivalent expression for 2log(x+1)-2log(x-1)-log(x-1)
two tall buildings are 200m apart .with what speed must a ball be thrown horizontally from the window 540 m above the ground in one building, so that it will enter a window 50m above the ground in the other?
how large a sample size is needed for 2 sided 95% confidence interval to have a length of 2 weeks when mean is 3.6
a missile is launched an angle of 26.5 with respect to the horizontal. if it travels in the straight line over the level Terran for 2 minute and its average speed is 6000 mile per hour. what is its altitude?
a television antenna is on the roof of the building. from a pt. on the ground 36.0 feet from the building , the angle of elevation of the top and the bottom of the antenna are 51 degree celsiusand 42 degree celsuis respectively. how tall is antenna?
Which is the standard form of the equation with p = 26, O= 3pi/4 ? SQRT2x SQRT2y = 0 SQRT2x SQRT2y + 52 = 0 SQRT2x + 52 = 0 SQRT2x + 52y = 0
the product of two consecutive even integersis 34 less than 7 times their sum.find the two integers.
One number is 10 more than twice another.Their product is 10 more than twice their sum.Find the numbers.
For Further Reading