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Chapter 9: Q2P (page 208)

Neglecting activity coefficients, calculate the pHof 1.0脳10-2MKOH

Short Answer

Expert verified

The pH of 1.0脳10-2MKOHis 12.00.

Step by step solution

01

Step: Definition of pH

pH is defined as a quantitative measure of acidity and basicity.Compounds having pH more than 7 is acidic in nature while pH when shown above than 7 is basic in nature. When pH comes 7 , compound is said to be neutral.

02

Step: Disassociation of HBr

HBris a strong acid and thus will completely disassociate. Thus, the concentration of HBris equal to the concentration of localid="1654776012313" HBr=H+.

03

Step: Calculating pH

pOH=-log1.0脳10-2=2.00pH=14-pOH=14-2=12.00

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Most popular questions from this chapter

Neglecting activity coefficients, calculate the pH of5.0脳10-8MHCIO4What fraction of H+is derived from dissociation of water?

A 0.0450Msolution of benzoic acid has a pH of2.78. CalculatepKafor this acid

Calculate the fraction of association (伪) for 1.00 脳 10-1, 1.00 脳10-2, and 1.00 脳10-12 M sodium acetate. Does 伪 increase or decrease with dilution?

(Without activities), calculate the pH of

(a) 1.0脳10-8MHBr

(b) role="math" localid="1654840353627" 1.0脳10-8MH2SO4(H2SO4dissociates completely to 2H+plus SO42-at this low concentration).

Describe how to prepare 100mLof0.200Macetate buffer, pH5.00,starting with pure liquid acetic acid and solutions containing ~3MHCIand~3MNaOH
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