0.05M is the concentration of the phosphate buffer
Explanation:
A buffer is defined as the aqueous mixture of a weak acid (KH₂PO₄) and its conjugate base (K₂HPO₄). The concentration of this buffer is the sum of the concentrations of the weak acid and the conjugate base, that is:
Concentration of phosphate buffer = 0.02M + 0.03M
=
<h3>0.05M is the concentration of the phosphate buffer</h3>
.150 = 3 20.20 = 4 25.00 = 4 If a 0 does not have a number or a period after it, it is not significant. If the 0 is behind the decimal point, it is always significant.
