
(a)
Interpretation: The volume of 0.115 M HClO4 required to neutralize 50 mL of 0.0875 M
NaOH .
Concept introduction:
The volume of HClO4 required for neutralization is calculated by the formula,
M1V1=M2V2V1=M2V2M1
Here,
- M1 is the molarity of HClO4 .
- M2 is the molarity of NaOH .
- V1 is the volume of HClO4 .
- V2 is the volume of NaOH .
(b)
Interpretation: The volume of 0.128 M
HCl required to neutralize 2.87 g Mg(OH)2 .
Concept introduction:
The number of moles is defined as the ratio of given mass of the compound in grams to the molar mass of the compound.
And,
The volume is calculated by the formula,
M=n of HClV(mL)×1000 mLV(mL)=nM×1000 mL
(c)
Interpretation: The molarity of Cl− solution.
Concept introduction:
The molarity is defined as the ratio of number of moles of solute to the volume of the solution in liters.
Molarity=Moles of soluteVolume of solution
(d)
Interpretation: The mass of KOH present in the solution if 45.3 mL of 0.108 M
HCl solution is required to neutralize the KOH solution.
Concept introduction:
The mass of KOH is calculated by the formula,
n=mMm=(n×M)
Here,
- n is the number of moles of KOH .
- m is the given mass of KOH .
- M is the molar mass of KOH .

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Chapter 13 Solutions
Chemistry the Central Science 13th Edition Custom for Lamar University
- Deducing a rate law from the change in concentration over time To exit full screen, press and hold esc A chemistry graduate student is studying the rate of this reaction: H2CO3(aq) → H₂O(aq) +CO₂ (aq) - She fills a reaction vessel with H2CO3 and measures its concentration as the reaction proceeds: time (milliseconds) [H2CO3] 0 0.0500 M 10. 0.0266M 20. 0.0181 M 30. 0.0138M 40. 0.0111 M Use this data to answer the following questions. Write the rate law for this reaction. Calculate the value of the rate constant k. Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. rate ☐ x10 k = Х 000 18 Ararrow_forwardWriting the rate law implied by a simple mechanism Suppose the formation of tert-butanol proceeds by the following mechanism: step elementary reaction 1 (CH3)3 CBr(aq) → (CH3)2 C* (aq) + Br (aq) 2 (CH3)2C (aq) + OH¯ (aq) → (CH3)2COH(aq) rate constant k₁ k₂ Suppose also k₁ »k2. That is, the first step is much faster than the second. Write the balanced chemical equation for the overall chemical reaction: Write the experimentally- observable rate law for the overall chemical reaction. Note: your answer should not contain the concentrations of any intermediates. rate = k ☐ Express the rate constant k for the overall chemical reaction in terms of K1, K2, and (if necessary) the rate constants k-1 and K-2 for the reverse of the two elementary reactions in the mechanism. k = ☐ □ ☑ G ? 00. 18 Ar Barrow_forwardDeducing a rate law from the change in concentration over time A chemistry graduate student is studying the rate of this reaction: 2SO3 (g) →>> 2SO2 (g) + O2(g) He fills a reaction vessel with SO3 and measures its concentration as the reaction proceeds: ? time (minutes) [SO3] 0 0.0200M 1.0 0.0105 M 2.0 0.00552M 3.0 0.00290M 4.0 0.00152M Use this data to answer the following questions. Write the rate law for this reaction. rate = k ☐ x10 Calculate the value of the rate constant k. Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. k = ☐ Х 000 18 Ar BAarrow_forward
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- Deducing a rate law from the change in concentration over time chemistry graduate student is studying the rate of this reaction: 2H3PO4 (aq) → P₂O5 (aq) +3H₂O (aq) 2 e fills a reaction vessel with H3PO and measures its concentration as the reaction proceeds: 4 time (seconds) [H3PO4] 0 0.500M 1.0 0.229 M 2.0 0.148M 3.0 0.110M 4.0 0.0871 M se this data to answer the following questions. Write the rate law for this reaction. rate = k x10 Calculate the value of the rate constant k. k = Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. ☑ G olo 18 Ararrow_forwardWriting the rate law implied by a simple mechanism Suppose the formation of nitrosyl chloride proceeds by the following mechanism: elementary reaction step rate constant 1 NO(g) + Cl2(g) → NOC₁₂(g) k₁ 2 NOCl2(g) + NO(g) 2 NOCl(g) →>> k2 Suppose also k₁ »k. That is, the first step is much faster than the second. Write the balanced chemical equation for the overall chemical reaction: Write the experimentally- observable rate law for the overall chemical reaction. rate = k ☐ Note: your answer should not contain the concentrations of any intermediates. Express the rate constant k for the overall chemical reaction in terms of K1, K2, and (if necessary) the rate constants k-1 and K-2 for the reverse of the two elementary reactions in the mechanism. k = | Х ? 18 Ararrow_forwardUsing first- and second-order integrated rate laws 1/5 Consider this reaction: H2CO3(aq) → H₂O (aq) +CO₂ (aq) At a certain temperature it obeys this rate law. rate = (2.27 s¹) [H2CO3] Suppose a vessel contains H2CO3 at a concentration of 0.830M. Calculate how long it takes for the concentration of H2CO3 to decrease by 83.0%. You may assume no other reaction is important. Round your answer to 2 significant digits. S x10 ☑ § ? 00. 18 Ararrow_forward
- Using the Arrhenius equation to calculate k at one temperature from k at... Try Again Your answer is incorrect. 0/5 a The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E = 28.0 kJ/mol. If the rate constant of this -1 -1 reaction is 2.5 × 10³ M ·S at 45.0 °C, what will the rate constant be at 104.0 °C? Round your answer to 2 significant digits. ST -1 -1 ☐ x10 k = 2.8 × 10 - M .S 18 Ararrow_forwardIn the theory of the state of transition, indicate the expression of the constant k in function of deltaE0#. This expression is also the ecuation of Arrhenius?arrow_forwardBriefly indicate the differences between Ea of the theory of collisions and E0# the theory of the state of transition.arrow_forward
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