Question

8. If S0.0 mL. of a 0.10 M solution of sodium chloride is mixed with 50.0 mL of 0.10 M magnesium chloride, what is the molar concentration of chloride in the resulting solution? a. 0.10M b. 0.20 M c. 0.05 M d. 0.15 M e. 0.25 M 9. What would be the products in the ionic equation for the following reaction? 2HBr(aq) + 2KOH(aq) → products 1. KTaq) and Br(aq); tl. KH(aq); III. H,0(1); IV KBr(s); V. BORI(aq); VI. a. I and I b. III and IV c. III and VI d. e. II, III, and V Il and V 10. which of the following ionic compounds is insoluble in water? a. BaCl b. Baso4 c. NaOH d. Ba(NO e MgCl 11. Which of the following compounds is most soluble in water? a. AgCI b. CaCO c. Al(OH e. Mgs 12. Fizzy Cola contains phosphoric acid (H,PO,). In order to determine the concentration of phosphoric acid in 50.0 mL of Fizzy Cola, a precipitation reaction with excess silver nitrate was carried out. The product, silver phosphate (419 g/mol), was dried and found to weigh 0.0576 g. What is the concentration of phosphoric acid in Fizzy Cola? a. 1.37x 103M b. 9.16 x 104M c. 8.25 x 103 M d. 2.75 x 10-M e. 5.50x 10-3 M When the oxidation-reduction reaction shown here is balanced, how many electrons are transferred for each atom of copper that reacts? 13. Ag (ag) Cu(s)Ag(s)+Cu (aą) d. 4 е.0 a. b. 2 c. 3 14. The oxidation number of carbon in carbon dioxide is d. 4 e. +1 a. +2 C. +4 15. What is the oxidation number of P in H:PO? d. 6 e. c.
8-15

Answer 1

6-8 지0-3 O.C o,IL 0. 15 M