5. Consider the equation for a saturated solution of potassium chromate:
K, CrO4(s)+ energy 5 2K+ (aq) + Cro. (aq)
A concentration vs. time graph for a saturated solution of K Cr0is shown below.
K+
Concentration
(M)
Cr02
Time
What happened at time t?
A. KNO, was added to the system.
B. K Cro. was removed from the system.
C. The temperature of the system was increased.
D. The temperature of the system was decreased.
Due to the stress at time t, will the solubility increase or decrease? Explain.

the answer is na (sodium)

the ratio of the conjugate base to the acid required to attain the desired ph.

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole

more infor would

a lot