Ka=1.8x10^-5. How do you calculate the value of pKa?
Log 1.8+log 0.0005 so answer is 4.74 is correct answer
According to formulas we solve this question Log1.8+log0.000010 and answer is4.74 correct answer
Oh, you want to calculate the value of pKa? Well, don't worry, I've got just the formula for you: pKa equals minus the logarithm (base 10) of Ka. So, grab your calculator and get ready for some logarithmic fun! It's like a mathematical magic show, but without the rabbits. Unless you're into that kind of thing, then maybe you should stick to magic shows. Good luck with those calculations, my friend!
To calculate the value of pKa, you need to take the negative logarithm of the Ka (acid dissociation constant). The formula is:
pKa = -log10(Ka)
In this case, the given value of Ka is 1.8x10^-5. To find the pKa, you will need to perform the following steps:
Step 1: Take the logarithm of Ka.
log(Ka) = log(1.8x10^-5)
Step 2: Multiply the result by -1.
-1 * log(Ka) = -1 * log(1.8x10^-5)
Step 3: Calculate the value using a scientific calculator or software.
-1 * log(1.8x10^-5) = approximately 4.74
Therefore, the value of pKa for Ka = 1.8x10^-5 is approximately 4.74.
How's it possible
pka = - 1.11394335
pKa = -log Ka.
pKa = -log 1.8 x 10^-5
Take the log of 1.8 x 10^-5 by punching in 1.8 x 10^-5 and punching the log key.
pKa = -(-4.74473)
pKa = +4.74473
Then round to the correct number of figures. I typed all the numbers that showed on my screen so you could see if you were punching in the right keys.