NECO June/July Chemistry Practical 2026 Answers - MYDPORT

Free NECO 2026 Chemistry Practical Alternative A + B Questions and Answers were given out in a free live EXPO Room. You can get them for yourself: NECO June/July Chemistry (Practicals) Questions and Answers.

CHEMISTRY PRACTICALS (CHEM) FREE QUESTION AND ANSWER ROOM AT NECO MAY/JUNE 2024

The 2026 NECO June/July Chemistry Practical examination will test candidates’ ability in laboratory techniques, observation, and recording results, as outlined in the Senior Secondary School Chemistry syllabus.

NECO 2026 Chemistry Practical Exam Timetable

Friday, 24th July, 2026

• Chemistry 3 (Practical): 10:00 am – 12:00 pm

NECO 2026 Chemistry Practical Specimens

Candidates will be provided with the following specimens (or equivalent):

• Sample A: Dilute Hydrochloric Acid (HCl)

• Sample B: Sodium Hydroxide solution (NaOH)

• Sample C: Unknown salt solution (may be CuSO₄, FeSO₄, or Pb(NO₃)₂)

• Indicators: Phenolphthalein / Methyl Orange

• Other materials: Test tubes, Burette, Pipette, Conical flask, Distilled water, Burner

NECO 2026 Chemistry Practical Questions

1. Carry out a titration using NaOH against HCl. Record your burette readings and calculate the average titre value.

2. Using the salt solution provided (C), perform the following:
a) Add NaOH in drops, then in excess. Record observations.
b) Add dilute HCl. Record observations.
c) Perform confirmatory tests to identify the cation.

3. Write balanced chemical equations for the reactions observed.

NECO 2026 Chemistry Practical Answers

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 Sample Practical Q&A (For Practice)

1. Titration Calculation (NaOH vs HCl):

• Average titre value = 25.0 cm³ (example)

• Reaction:

$$NaOH + HCl \rightarrow NaCl + H_2O$$

• Moles of HCl = M × V = 0.10 × 25/1000 = 2.5 × 10⁻³ mol

• Moles of NaOH = same (1:1 ratio)

2. Test on Sample C (FeSO₄ solution as example):

• With NaOH: Green ppt forms, turns brown on standing.

• With HCl: No visible reaction.

• Confirmatory: Add K₃[Fe(CN)₆], gives blue ppt (Turnbull’s blue).
  Cation present: Fe²⁺

3. Balanced Equations:

• $Fe^{2+} + 2OH^- \rightarrow Fe(OH)_2 (s)$

• $Fe(OH)_2 \rightarrow Fe(OH)_3$ (on standing in air)

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