Question

ORY 3 Laboratory Review Describe how you will make the pH 7 buffer buflers of pli 2, 4,6.8, and 10, but you need a pli 7 buffer for your planted pink hydrangeas in his yard last year, but this year when the flowers He took good care of the 18. A gardener bloomed they were blue. He doesn't understand what happened. plants and mulched them with pine straw, just like the gardening encydo happened to his plants? How could he make them produce pink blooms againi encyclopedia said. What

Answer 1

Ans. 17 1st you have to find out molarity/conc. And volume Of each buffer. For example if they are 1 molar with a conc of 10ml then add the pHs of the compounds and then devide them by 2.

Like to get pH7 you add pH of 6 and 8 giving you a total of 14. Then take the sum and devide by 2 giving you a buffer with pH 7. But you only do it this way if the conc. / molarity and volume are the same amount for the buffers given.

Ans. 18 color in hydrangeas depends on pH of soil. Blue color favoured by low pH of soil means high acidity while pink colr favoured by high pH means high alkalinity of soil.

To make the flowers pink again farmer has to rise to alkalinity of soil.