The reactions below represent neutralization reaction; in which of them is the value of ΔH highest?

3 years ago

A. CH3CH2COOH + KOH → CH3CH2COOK + H2O B. NH4OH + HCl → NH4 + H2O C. NaOH + HCl…

If the volume of a given mass of a gas at 0ºc is 29.5cm³ what will be the volume of the gas at 15ºc; the pressure remaining constant

3 years ago

A. 31.6 B. 62.2 C. 32.7 D. 31.1 Correct Answer: Option D = 31.1 Explanation Charles' law is a special…

In which of the following will hydrogen form ionic compound?

3 years ago

A. HCl B. NaH C. NH3 D. CH4 Correct Answer: Option B - NaH Explanation NaH is a saline (salt-like)…

2H2 + O2 → 2H2O: From this equation; calculate the volume of unreacted oxygen gas if a mixture of 50cm3 of hydrogen and 75cm3 of oxygen are involved

3 years ago

A. 85cm3 B. 50cm3 C. 125cm3 D. 55cm3 Correct Answer: Option B - 50cm3 Explanation Since 2 mol H2 reacted…

An organic compound contains 69% carbon; 15.3% hydrogen and 30.7% oxygen. Calculate the the empirical formula [C=12, H = 1, O = 16]

3 years ago

A. C4H12O B. C3H9O C. C4H8O D. C3H8O Correct Answer: Option D - C3H8O Explanation C = 69/12; H =…

In order to electroplate spoon with silver; the arrangement of the electrolytic cell is?

3 years ago

A. the anode is a silver rod and the cathode is the spoon B. the anode is the spoon and…

Crude petroleum is converted to useful products by the processes of?

3 years ago

A. fractional crystallization B. fractional distillation C. filtration D. chromatography Correct Answer: Option B - fractional distillation Explanation A process…

An organic compound which decolorizes bromine water is likely to be?

3 years ago

A. C3H8 B. C2H6 C. C4H10 D. C2H4 Correct Answer: Option D - C2H4 Explanation If you shake an alkene…

A coloured gas that is known to be poisonous and can readily damage the mucous lining of the lungs is?

3 years ago

A. hydrogen sulphide B. carbon(ii)oxide C. chlorine D. sulphur(iv)oxide Correct Answer: Option B - carbon(ii)oxide Explanation When too much carbon…

An organic functional group which can likely decolourize ammoniacal silver nitrate is?

3 years ago

A. alkene B. alkane C. alkyne D. alkanol Correct Answer: Option C - alkyne Explanation Terminal alkynes react with Tollens…

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