Answer:
Explanation:
All buffer solutions have an effective range in which the buffer has a good regulation of pH.
This range is calculated by: pKa-1 < pH < pKa+1
The pH we need to control should be in that range. So for the phosphoric acid:
1) => 2.2-1< pH < 2.2+1 => 1.2<pH<3.2
2) => 7.2-1< pH < 7.2+1 => 6.2<pH<8.2
3) => 12.7-1< pH < 12.7+1 => 11.7<pH<13.7
For a pH=7.4 using a phosphate buffer we need to use diacid phosphate ()
Answer:
The answer is in image see it..
Yes, a solid has a fixed volume.
( 5) direction should same in first than opposite in last
<span>From the chemical equ
NO2 + 02 gives N2O4 .
The above means that 1 mole of No2 produces1 mole of N204.
Hence 0.54 mole of NO2 will also produce 0.54 mole of N2O4.</span>