(f) When 8.60 grams of AgNO3 is dissolved, how many moles of cation are produced

Question

(f) When 8.60 grams of AgNO3 is dissolved, how many moles of cation are produced? WebAssign will check your answer for the correct number of significant figures. mol

How many moles of anion are produced? WebAssign will check your answer for the correct number of significant figures. mol

(g) If one third the amount of AgNO3 was added to 100. g of water, what would happen to the temperature change?

>The temperature change would be twice as large.

>The temperature change would be three times as large.

>The temperature change would be one-half as large.

>The temperature change would be one-third as large.

>The temperature change would be four times larger.

>The temperature change would be the same.

Explanation / Answer

f) When 8.60 gms of AgNO3 is dissolved,

AgNO3 (aq) <-------------> Ag+ (aq) + NO3- (aq)

Molar mass of AgNO3 = 169.87 g/mol

moles of AgNO3 = mass/molar mass = 8.60/169.87 = 0.051 moles

For 0.051 moles of AgNO3 0.051 moles of Ag+ (cations) are produced.

For 0.051 moles of AgNO3 0.051 moles of NO3- (anions) are produced.

g) The temperature change would be twice as large as it would produce 2 ions for evry molecule of the salt.

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