Neco Model Questions Vol1 2022 Chemistry Question 47

Practice objective / multiple choice question 47 from the 2022 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2022 Chemistry Objective / Multiple Choice Hard Difficulty
Question 47 NECO_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • objective

A copper strip weighing 2.00\,g is immersed in 250.0\,mL of 0.200\,M AgNO₃ solution. After the reaction, the filtrate is titrated with 0.100\,M HCl, requiring 15.0\,mL to reach the endpoint. (a) State which metal is oxidized and which ion is reduced. (b) Calculate the theoretical mass of silver that could be deposited if all the copper were oxidized. (c) Determine the actual mass of silver deposited based on the titration data. (d) Compute the percent yield of silver.

Answer Options

Correct Answer A. Cu oxidised, Ag⁺ reduced; theoretical Ag = 6.80 g; actual Ag = 5.24 g; percent yield = 77.1 %
B. Cu oxidised, Ag⁺ reduced; theoretical Ag = 5.60 g; actual Ag = 4.30 g; percent yield = 76.8 %
C. Cu oxidised, Ag⁺ reduced; theoretical Ag = 7.20 g; actual Ag = 5.80 g; percent yield = 80.6 %
D. Cu oxidised, Ag⁺ reduced; theoretical Ag = 6.80 g; actual Ag = 4.00 g; percent yield = 58.8 %
Correct Answer
A
Correct Option:
Cu oxidised, Ag⁺ reduced; theoretical Ag = 6.80 g; actual Ag = 5.24 g; percent yield = 77.1 %

About This Question

This is Neco Model Questions Vol1 2022 Chemistry Question 47. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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