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Ch.4 - Reactions in Aqueous Solution

Chapter 4, Problem 105a

Suppose you have 3.00 g of powdered zinc metal, 3.00g of powdered silver metal and 500.0 mL of a 0.2 M copper(II) nitrate solution. (a) Which metal will react with the copper(II) nitrate solution?

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Hi everyone for this problem, we're told to consider the following substances five g of powdered platinum and five g of powdered chromium metal. We need to identify the metal that will react with ml of a 1.5 nickel nitrate solution. So we're going to need to refer to our activity series for this problem. And we're going to look at the position of our two medals and that is platinum and chromium. So we're going to look at their positions to see which one is going to be more reactive to oxidation. And so when we list them, we're going to list these two metals according to the highest and lowest and we'll see that chromium appears above platinum. And so that means that chromium is going to be more reactive to oxidation. And because chromium is going to be more reactive to oxidation, this is going to be the metal that's going to react with our nickel to nitrate solution. So our final answer here is chromium will react with our nickel to nitrate solution. Okay, so I'll go ahead and just erase that. And our final answer is that chromium will react. Okay, so that's the end of this problem. I hope this was helpful
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Textbook Question

Citric acid, C6H8O7, is a triprotic acid. It occurs naturally in citrus fruits like lemons and has applications in food flavouring and preservatives. A solution containing an unknown concentration of the acid is titrated with KOH. It requires 23.20 mL of 0.500 M KOH solution to titrate all three acidic protons in 100.00 mL of the citric acid solution. Write a balanced net ionic equation for the neutralization reaction.

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Textbook Question

Citric acid, C6H8O7, is a triprotic acid. It occurs naturally in citrus fruits like lemons and has applications in food flavouring and preservatives. A solution containing an unknown concentration of the acid is titrated with KOH. It requires 23.20 mL of 0.500 M KOH solution to titrate all three acidic protons in 100.00 mL of the citric acid solution. Calculate the molarity of the citric acid solution.

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Textbook Question
(c) If 18.65 mL of the caesium hydroxide solution was needed to neutralize a 42.3 mL aliquot of the hydroiodic acid solution, what is the concentration (molarity) of the acid?
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Textbook Question

Suppose you have 3.00 g of powdered zinc metal, 3.00g of powdered silver metal and 500.0 mL of a 0.2 M copper(II) nitrate solution. (d) What is the molarity of Cu2+ ions in the resulting solution?

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Textbook Question

(a) By titration, 15.0 mL of 0.1008 M sodium hydroxide is needed to neutralize a 0.2053-g sample of a weak acid. What is the molar mass of the acid if it is monoprotic?

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Textbook Question

(b) An elemental analysis of the acid indicates that it is composed of 5.89% H, 70.6% C, and 23.5% O by mass. What is its molecular formula?

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