In which of the following solvents would you expect KBr to be most soluble? CCl_
ID: 1066706 • Letter: I
Question
In which of the following solvents would you expect KBr to be most soluble? CCl_4 (carbon tetrachloride) C_6H_14 (hexane) C_6H_6 (benzene) CH_3CH_2OH (ethanol) C_6H_12 (cyclohexane) Which of the following molecules is polar? SF_6 CO_2 BF_3 CCl_4 NO_2 Which of the following aqueous solutions has the highest osmotic pressure at 25 degree C (assume 100% dissociation for all soluble ionic compounds)? 0.15m K_3PO_4 0.20m KI 0.25m K_2CO_3 0.30m NH_4NO_3 0.45m C_12H_22O_11 Consider the following equilibrium: PCl_3(g) + Cl_2(g) leftharpoonoverrightharpoon PCl_5(g); delta H = -92kJ The concentration of PCl_3 at equilibrium may be increased by decreasing the temperature. the addition of neon. increasing the pressure. Adding Cl_2 to the system. the addition of PCl_5. A titration of an acid and base to the equivalence point results in a noticeably acidic solution. It is likely this titration involves a weak acid and a weak base (where K_a equals K_b). a strong acid and a strong base. a strong acid and a weak base. a weak acid and a strong base. Given the rate law, Rate = k[A][B], what are appropriate units for the rate constant k? s^-1 M^-1s^-1 M^-2s^-1 M/s M^2/sExplanation / Answer
16. KBr is ionic compound . It is soluble in polar solvent. It is soluble in ethanol
D. CH3CH2OH
17. E. NO2
NO2 is polar molecule .It is bent shape.
18. K3PO4 is contains 4 ions . So number of particles are increases.osmotic pressure is more.
A. 0.15mK3PO4
19. E the addition of PCl5
conc of products are increases. The equilibrium shift to left side.
20. C strong acid and weak base
21. Rate = K[A][B]
it is second order . The units of second order is M-1 sec-1
B. M-1 sec-1