0.19 mol of NaOH is added to 1.0 L of a 1.0M HCH, CO₂ solution. 0.64 mol of HBr is added to 1.0 L of a solution that is 1.4M in both HCH,CO₂ and KCH, CO₂ acids: bases: X O other: O O acids: O bases: ☐ ☐ other: ☐ G 00 The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself. Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the formulas of the species that will act as neither acids nor bases in the 'other' row. You will find it useful to keep in mind that HCH3CO2 is a weak acid.

If 8.00 mL of a different hydrochloric acid solution had a known concentration of 0.3456 M, how many mL of the 0.1232M NaOH solution would be required to reach the equivalence point? (3 sig figs)

A substance is mixed with water and it donates 0.4% of its H+ ions. Which of the following BEST describes the substance?

Row 1: Your answer is incorrect. • Row 2: Your answer is incorrect. Row 4: Your answer is incorrect. The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself. Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the formulas of the species that will act as neither acids nor bases in the 'other' row. You will find it useful to keep in mind that NH, is a weak base. 1.3 mol of HI is added to 1.0 L of a 1.3MNH, solution. 0.22 mol of HNO, is added to 1.0 1. of a solution that is 1.1M in both NH, and NH Br. ✔ acids: NH, H,O bases: 11,0, NHL, other: I acids: NH H bases: NH, other: NO, Br a S da X 0.0.

when solutions of Na2S and FeCI3 are mixed, What is the for the solid formed?

Josephine reacts 10.0 mL of 0.50 M HCI with 10.0 mL of 0.50 M KOH. The solution experienced a temperature rise of six degrees Celcius. If she doubles the volume of acid and base she used (while not changing the concentrations), would the temperature rise be half of the original AT (3 C), the same as the original AT (6 C) or twice that of the original AT (12 C) ? Justify your answer. 5. List two things that are necessary for an effective collision at the molecular level. 6. List one way a student can increase the rate that his rock salt (magnesium sulfate pieces) reacts with acid.

In the following acid-base equilibria of weak acids in water, label the acid (A), the base (B), the conjugate acid (CA), and the conjugate base (CB). HCIO,(aq) + H,O(1) = H,O*(aq) + C1O, (aq) H₂CO3(aq) + H₂O(1) H₂O+ (aq) + HCO3(aq) H,O(1) +CH,NH (aq) = CH,NH,(aq) + H,O*(aq) O CH₂COOH(aq) + H₂O(1) ⇒ CH₂COO¯(aq) + H₂O+ (aq) O B Answer Bank CA A CB

student recorded the temperature change and calculated the enthalpy of neutralization. chemists. Explain why and how (higher or lower) the temperature will be different. Identify the who a change that will be from that by the other two 1.10 M HCI (equal to his NaOH added 50.0 mL of M HCl to her NaOH Each coffee cup (Part B). Brett added 50,0 mL of HCI to his of 45.5 mL of 3. Part B. 50.0 mL of M in separate Styrofoam Experiment 25 2

Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change its pH. alo initial type solution initial components (check all that apply) effect of change on pH change (check one) O acidic pH higher H,0 basic add H C10, O pH lower A O neutral O pH the same acidic O pH higher H,0 add Na ClO, B O basic O pH lower O neutral pH the same O acidic pH higher Н, 0, КОН V basic add H Br O pH lower O neutral O pH the same O acidic O pH higher D Н,о, КОН O basic add K Br O pH lower O neutral pH the same Explanation Check © 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accessibility

A 0.251 g sample of impure NaOH requires 17.6 mL of 0.2903 M HCl for neutralization. What is the percent of NaOH in the sample, by weight?