The higher the K sp of the salt, the less soluble the salt. O True O False QUEST

Question

The higher the K sp of the salt, the less soluble the salt. O True O False QUESTION 24 What is the pH of a 0.150 M NaOH solution? 0.82 O 3.05 O 11.66 O 13.18 QUESTION 25 A catalyst elevates the rate of a reaction by: O lowering the activation energy O decreasing the effectiveness of molecular collisions O increasing the number of molecular collisions O none of the above QUESTION 26 Consider the reaction: 2A +B®C, and a kinetics study on this reaction yielded: Al mol/L B1 mol/L Rate mol/L/s 100 050 050 200 200 100 03 10 27 10-3 25 10 What order is the reaction with respect to ([A], [B])? O 1, 2 O 2,1 O 2,0 0,2

Explanation / Answer

1 .False , as more the Ksp more will be the solubility of the salt.

24 . [OH-] = 0.150 M

pOH = -log[OH-] = -log(0.150) = 0.82

pOH + pH = 14

So pH = 14 - pOH = 14 - 0.82 = 13.18

Hence option ( D) is correct .

25 . Option(a) is correct .

Catalyst increases the rate of reaction by lowering the activation energy by providing a path of low activation energy .

Rate .

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