Bubbling excess carbon (IV) oxide into calcium hydroxide solution results in the formaton of

• A. CaO
• B. Ca(HCO₃)₂
• C. H2CO₃
• D. CaCO₃

What is the value of n in the following equation? Cr₂O7^2- + 14H⁺ + ne^-→ 2Cr³⁺+ 7H₂O

• A. 2
• B. 3
• C. 6
• D. 7

The initial volume of a gas at 300 K was 220cm³ Determine its temperature if the volume became 250cm³

• A. 183 K
• B. 264 K
• C. 300 K
• D. 341 K

Which of the following metallic oxides is amphoteric?

• A. AI₂O₃
• B. Fe₂O₃
• C. MgO
• D. Na₂O

Consider the reaction represented by the equation. 2NaHCO₃(s) → 2Na2CO₃(S) + CO₂(g) + H₂O(g) what volume of carbon (IV)oxide at s.t.p is evolved when 0. 5 moles of NaHCO₃ is heated? [Molar volume = 22.4 dm³ at s.t. p]

• A. 1.12dm³
• B. 2.24dm³
• C. 5.6dm³
• D. 56.0dm³

Which of the following equimolar solutions has the highest conductivity?

• A. CH₃COOH(aq)
• B. H₂CO₃(aq)
• C. H₂SO₄(aq)
• D. NaOH (aq)

An element X has isotopic masses of 6 and 7. if the relative abundance is 1 to 12.5 respectively, what is the relative atomic mass of X?

• A. 6.0
• B. 6.1
• C. 6.9
• D. 7.0

Which of the following statements about enthalpy of neutralization is correct? It

• A. is constant for a strong acid and a strong base
• B. cannot be determined using calorimeter
• C. has a positive value
• D. is higher for strong acid and a weak base

The volume occupied by 17g of H₂S at s.t.p. is [H = 1.00, S = 32.0, Molar volume = 22.4 dm³]

• A. 11.2dm³
• B. 17.0 dm³
• C. 34.0dm³
• D. 44.8dm³

(a)(i) What is a functional group?

(ii) State the functional group in each of the following compounds: I. CH\(_3\)CH\(_2\)CH(CH\(_3\))OH; II. CH\(_3\)CH\(_2\)CH\(_2\)COOH.

(b)(i) Complete the following equations:

(ii) Draw the structure(s) of the product(s) formed in (b)(i) above.

(c)(i).Write an equation for the prepzration of butan-2-ol from butene.

(d) (i) Give the reagents required for the following conversions to take place: I. CH\(_2\) = CH\(_2\) to CH\(_3\)CH\(_2\)OH; II. CH\(_3\)CH\(_2\)OH to CH\(_3\)COOH; Ill. CH\(_3\)COOH to CH\(_3\)COOCH\(_2\)CH\(_3\).

(e) Consider the following organic structure; CH\(_3\)OHCHCH = CHCOOH

(i) State what would be observed when the organic compound is treated with each of the following reagents: I. cold NaHCO\(_{3(aq)}\); II. hot solution of I\(_2\) in NaOH\(_{(aq)}\); Ill. bromine water.