Question

The pH of a substance added to a citrate buffer, y, depending on the ratio of citric acid to sodium citrate, x, can be modeled using the equation y = 6.4 – log x. If the pH of the substance is 6.5, what is the ratio of citric acid to sodium citrate?

xxxxA.0.79
B. 1.26
C. 5.59
D.7.20

It's A

Answer 1

A. 0.79

Explanation:

edge 2020

Answer 2

Yes it's A. 0.79

Explanation:

You plug in 6.5 into the y-value since it asks to find the ratio,x, if the pHis 6.5. Then you can solve using a calculator to get 0.79432, or 0.79