2 LON-CAPA GA9- Questio.. x capa2.its d First and Reactivity/Topic 11 Quantilati

Question

2 LON-CAPA GA9- Questio.. x capa2.its d First and Reactivity/Topic 11 Quantilative Acid Base Chemistry The Le First Year C ure -Blackboard r] DalOnline i Gregory Hebb (Student) Dalcad Deposit Dalho selbsanes Dalhouse lnsersty Lt Learning Commons i J LON-CAPA ÷Course Contents » » Graded Assagnment 9-GAS-Question 1 1. Calculate the pH (to two decimal places) for the following: a) 1.32x101 M HCO4 0.88 You are correct. Previous Tres ur receipt no. is 155-5997 b) 5.31x 10-3 M CaH2 2275 Tries 1/3 Previous Tries 2. Calculate the pOH (to two decimal places) for the following a) 7.74x 10-1 M HBr 0.1113 Submt Answer Tries 1/3 Previous Tries b) 4.90x102 M Sro Submit Answer Tries 0/3 This discussion is closed 0 Frefos automatically sends some data to Mesilis so that we can imgreve your experience

Explanation / Answer

HClO4 is a strong acid. Hence

1)a) pH=-log(1.32*10^-1)

=0.879

b) pH=-log(2*5.31*10^-3) (since there are 2 H atoms)

so pH=1.973

c)pH=-log(7.74*10^-1

=0.1113

so pOH=14-pH

=14-0.1113

=13.8887

b)assuming strong base,

pOH=-log(4.9*10^-2)

=1.31

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