[H+] 11 [OH™] 2[CO-] + Answer Bank 2[H+] [HCO3] + 3[H+] [CO] [H,CO, ]

In each row check off the boxes that apply to the highlighted reactant. reaction 2+ → Zn (CH₂CN)² + (aq) 2+ Zn (aq) + 6 CH 3 CN (aq)- + Ag+ (aq) + 2 NH3(aq) → Ag (NH₂) (aq) 2 H₂(g) + 2 IC1 (g) → 2 HCl(g) + 1₂(g) The highlighted reactant acts as a... (check all that apply) 0 0 0 0 0 0 0 0 0 0 0 Brønsted-Lowry acid Brønsted-Lowry base Lewis acid Lewis base Brønsted-Lowry acid Brønsted-Lowry base Lewis acid Lewis base Brønsted-Lowry acid Brønsted-Lowry base Lewis acid Lewis base X 5

1 A solution of 2.50 M formic acid is 0.915% ionized. What is the pH of this solution? Enter your answer, rounded to the correct number of significant figures, in the box. pH = X 2.54 A solution of HA, a weak acid (pKa = 8.112), has a pH = 5.770. [HA]eq = 3.12 x 10-4 M. What was the initial concentration of the weak acid solution? Enter your answer, rounded to the correct number of significant figures, into the box below. If your answer is a decimal, put a O before the decimal point. Do not use scientific notation. pH = 1 [weak acid] initially = X X 4.00 0.00404 An aqueous solution of 0.045 M HA (pKa = 11.11) is prepared. What is the pH of this solution? Enter your answer, rounded to the correct number of significant figures, in box below. If your answer is a decimal, put a 0 before the decimal point. Do not use scientific notation. M 1050301 the

Predict the products when lead(II) nitrate reacts with NaCl. Pb(NO3)2(aq) + NaCl(aq) - >

A lab is performed by students who used diagnostic tests to try to distinguish among four pure substances. Solids labelled as 1, 2, 3, and 4 were dissolved in 100 mL of distilled water in four separate beakers with each becoming a colourless solution. The results of two diagnostic tests were recorded as follows: Solution 1 2 M Result of Conductivity Test conducts conducts does not conduct conducts Result of Litmus Test no change blue turns red no change red turns blue Using the results of the diagnostic tests, select the identity for each solution. 1. Citric acid is the solution in beaker 2. Potassium hydroxide is the solution in beaker 3. Glucose is the solution in beaker 4. Calcium chloride is the solution in beaker

13. Hydroxyapatite is the main mineral component of bone. How many grams of hydroxyapatite will dissolve in 1.00 L of H20? Ksp = 2.34 x 10-59; Molar mass = 502.3 g/mol Cas (PO4)30H (s) 5 Ca2+ (aq) + 3 PO43- (aq) + OH- (aq)

Write the missing reactants in the following reactions. (b) (c) (d) (e) (f) + + + + + NaBH4 heat NaHCO3 AICI NHCH₂CH3 of OH olev HCI كت NHCH₂CH3 Hoold HO

In the reaction shown below, the change in enthalpy, AH, will be H H H H H 63 kcal/mol + + H-CI 103 kcal/mol 166 kcal/mol 101 kcal/mol Mi H H CI 84 + kcal/mol 185 kcal/mol kcal/mol.

type of reaction, product and observation