Which one of the following is a buffer sol'nHCN k,-6.2x10 10CH:COОH ka%31.8х105HNO3 and HOCI Ka>>1О 0.20 М СНЗСООНO 1,0 M HNO, and 1.0 M NaOHO 1.0M CH3COOH + 1.0M NACH CO000.4M HCN + 0.2 M NaCH:COOO01M KCN and NaCl What concentration of formic acid, HCOOH, in M is required to give a solutionwith a pH of 3.00? [K3(HCOOH) = 1.77 × 10-4]O 1.00x10 ³ MO 5.65x10 3 MO 1.77x10² MO 2.34x10 MO 1.77x10ª M

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Which one of the following is a buffer sol'n HCN k,=6.2x1010 CH3COOH k,=1.8x105 HNO3 and HCI Ka>>1 O 0.20 M CH3COOH O 1,0 M HNO3 and 1.0 M NaOH O 1.0 M CH3COOH + 1.0 M NaCH3COO O 0.4 M HCN +0.2 M NaCH3COO O 0.1 M KCN and NaCl

Which one of the following is a buffer sol'n HCN k,=6.2x1010 CH3COOH k,=1.8x105 HNO3 and HCI Ka>>1 O 0.20 M CH3COOH O 1,0 M HNO3 and 1.0 M NaOH O 1.0 M CH3COOH + 1.0 M NaCH3COO O 0.4 M HCN +0.2 M NaCH3COO O 0.1 M KCN and NaCl

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

Which one of the following is a buffer sol'n
HCN k,-6.2x10 10
CH:COОH ka%31.8х105
HNO3 and HOCI Ka>>1
О 0.20 М СНЗСООН
O 1,0 M HNO, and 1.0 M NaOH
O 1.0M CH3COOH + 1.0M NACH CO0
00.4M HCN + 0.2 M NaCH:COO
O01M KCN and NaCl

What concentration of formic acid, HCOOH, in M is required to give a solution
with a pH of 3.00? [K3(HCOOH) = 1.77 × 10-4]
O 1.00x10 ³ M
O 5.65x10 3 M
O 1.77x10² M
O 2.34x10 M
O 1.77x10ª M

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