2023 NECO SSCE-MIDNIGHT-QUESTIONS AND ANSWERS.
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(2) (
(a) Observation: G dissolves completely in distilled water.
Conclusion: G is soluble in water.
(b)
(i) Observation: The litmus paper remains unchanged.
Conclusion: The solution is neutral, indicating that G is neither acidic nor basic.
(ii) Observation: The solution turns cloudy.
Conclusion: G reacts with NaOH to form a precipitate.
(iii) Observation: No visible reaction occurs.
Conclusion: G does not react with dilute HNO3.
(iv) Observation: A white precipitate forms.
Conclusion: G reacts with BaCl2 to form a precipitate in the presence of excess dilute HNO3.
(a) Observation: G dissolves completely in distilled water.
Conclusion: G is soluble in water.
(b)
(i) Observation: The litmus paper remains unchanged.
Conclusion: The solution is neutral, indicating that G is neither acidic nor basic.
(ii) Observation: The solution turns cloudy.
Conclusion: G reacts with NaOH to form a precipitate.
(iii) Observation: No visible reaction occurs.
Conclusion: G does not react with dilute HNO3.
(iv) Observation: A white precipitate forms.
Conclusion: G reacts with BaCl2 to form a precipitate in the presence of excess dilute HNO3.
*TAKE NOTE*
For question 1
Use your school's endpoint in place of *20.4 cm³* in part (a)
Use the endpoint in part b(ii)
Use your answer in b(ii) for part b(iii) and b(iv)
For question 1
Use your school's endpoint in place of *20.4 cm³* in part (a)
Use the endpoint in part b(ii)
Use your answer in b(ii) for part b(iii) and b(iv)
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