INTRODUCTION TO CHEMISTRY(LL)-W/CONNECT
5th Edition
ISBN: 9781260264920
Author: BAUER
Publisher: MCG
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Chapter 13, Problem 115QP
Interpretation Introduction
Interpretation:
Reason for
Concept Introduction:
Bronsted-Lowry theory states that the substance which accepts
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What is the base in the following chemical reaction? MgH₂(s) + 2H₂O(l) → Mg(OH)₂(s) + 2H₂(g)
Consider the following data on some weak acids and weak bases:
name
K₂
formula
HNO₂ 4.5 x 104
acetic acid HCH,CO₂ 1.8x105
acid
nitrous acid
solution
0.1 M HONHYBT
0.1 M KBr
Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to
the solution that will have the next lowest pH, and so on.
0.1 M KCH₂CO₂
0.1 M C₂H₂NHCI
PH
choose one
choose one
choose one
base
choose one
K
name
formula
hydroxylamine HONH₂ 1.1 x 107
pyridine
CH₂N 1.7×10
The active ingredient of bleach such as Clorox is sodium hypochlorite (NaClO). Its conjugate acid, hypochlorous acid (HClO), has a Ka of 3.0 × 10–8.
(a)The undiluted bleach contains roughly 1 M NaClO. Calculate the pH of 1 M NaClO solution.
(b)Some applications require extremely diluted bleach solution, such as swimming pools. Suppose the solution in (a) is diluted by 10,000 -fold. Calculate the pH of the diluted solution, and demonstrate that you can still neglect the autoionization of water in your calculation.
(c)Suppose the solution in (a) is diluted by 1million-fold, briefly explain how your approach will be different. Write the equation with [H3O+] as the unknown, but you do not need to solve it.
Chapter 13 Solutions
INTRODUCTION TO CHEMISTRY(LL)-W/CONNECT
Ch. 13 - How do acids and bases differ from other...Ch. 13 - Prob. 2QCCh. 13 - Prob. 3QCCh. 13 - Prob. 4QCCh. 13 - Prob. 5QCCh. 13 - Prob. 6QCCh. 13 - Prob. 1PPCh. 13 - Prob. 2PPCh. 13 - Prob. 3PPCh. 13 - Prob. 4PP
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- Two chemical reactions are listed. In one of them, the phosphorus-containing anion on the left is a Brønsted acid, and in the other reaction, the phosphorus-containing anion on the left is a Brønsted base. Identify in which reaction it is a Brønsted acid. О н,РО, (аq) + CH;CO, (аq) — НРО,* (аq) + CH;CO2H(aq) НРО * (аq) + HСО; (аq) — Н,РО, (аq) + СОз* (аq)arrow_forwardPlease provide explarrow_forwardWhat is An for the following equation in relating K, to K? 2 SO-(g) + O2(g) -- 2 SO3(g) O 2 O 3 O 1 2.arrow_forward
- If the Kb for hydrazine, N2H4(aq), is 1.7 x 10-6 , calculate the pH of a 1.8 mol/L solution of hydrazine.arrow_forward1. State Le Chatelier’s Principle. If the equilibrium constant (K) ˃ 1, what will be the direction of the equilibrium position? [A/3]arrow_forwardWhich of the following is a complete balanced reaction for an Arrhenius base in water? NaOH (s) 2 NaH (s) + O2 (g) →> ○ Mg(OH) 2 (s) → Mg2+ (aq) + OH (aq) ○ HNO2 (aq) → H+ (aq) + NO₂ (aq) KOH (s) →> K+ (aq) + OH¯ (aq)arrow_forward
- Consider the reaction below. Co(H,O),* (aq) + 4 Cl¯ (aq) = COC1," (aq) + 6 H,O (1I) The equilibrium constant expression (K) of the reaction does not include the concentration of H,O even though the reaction produces six moles of water. Explain.arrow_forwardWhat is the pH of 8.1 x 105 M HCIO4 solution? Is it acidic, basic or neutral? 4.09; acidic O 4.09; basic O -4.09; neutral O 9.91; basicarrow_forwardWhy is rainwater naturally acidic, even in the absence ofpolluting gases such as SO2?arrow_forward
- What is the equilibrium constant expression (Ka) for the acid dissociation of hypochlorous acid? HClO(aq)+H 2 O(l) H 3 O^ + (aq)+ClO-(aq) . a) Ka=[H 3 O^ + ]+[ClO-]-[HClO]; b) Ka=([HClOl[H 2 O]/([H 3 O^ + ][ClO-]); c) Ka=([H 3 O^ + ][ClO-])/([HClO][H 2 O]; d) Ka=(IH 3 O^ + ][ClO-])/[HClO]arrow_forwardA 0.150 mol · L 1 solution of a weak base (B) has a pH of 11.28. Part A Based on the pH, determine [OH ] at equilibrium for this weak base solution. Express your answer to two significant figures. [OH-] = 1.9-10_3 mol · L-1 Submit Previous Answers Completed Part B At equilibrium, [OH ] = 1.9x10-3 mol - L-1, which is also the concentration of the conjugate acid BH+. Based on this, determine Kh for the weak base B. Express your answer using two significant figures. ? K = Submit Request Answerarrow_forwardIf 44.97 ml of a solution of HCl are equivalent to 43.76 ml solution of NaOH, and if 49.14 ml of the latter will neutralize 0.2162 g of KHC2O4.H2C2O4.2H2O, what volume of water should be added to a liter of the HCl in order to make it 0.0500 N?arrow_forward
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