| 2181 |
Which reagent distinguishes ethanal from propanone? |
Chemistry
Reactions of aldehydes and ketones |
Easy |
| 2182 |
Which aldehyde undergoes the Cannizzaro reaction with concentrated NaOH? |
Chemistry
Reactions of aldehydes and ketones |
Medium |
| 2183 |
What mass of silver (Ag = 108 g mol⁻¹) is deposited when 0.1 mol of ethanal is fully oxidised by Tollens' rea… |
Chemistry
Reactions of aldehydes and ketones |
Medium |
| 2184 |
What is the final product when ethanal is warmed with dilute NaOH? |
Chemistry
Reactions of aldehydes and ketones |
Hard |
| 2185 |
Which test distinguishes ethanoic acid from phenol? |
Chemistry
Carboxylic acids |
Easy |
| 2186 |
What product is obtained when sodium propanoate is heated with soda-lime? |
Chemistry
Carboxylic acids |
Easy |
| 2187 |
Which of these acids is the strongest? |
Chemistry
Carboxylic acids |
Medium |
| 2188 |
What mass of CO₂ is released when 6.0 g of ethanoic acid reacts completely with excess NaHCO₃? |
Chemistry
Carboxylic acids |
Medium |
| 2189 |
Ethylbenzene is heated with alkaline KMnO₄ and then acidified. What is the product? |
Chemistry
Carboxylic acids |
Hard |
| 2190 |
Formalin, used to preserve biological specimens, is an aqueous solution of which compound? |
Chemistry
Uses |
Easy |
| 2191 |
Which compound is commonly used as a food preservative? |
Chemistry
Uses |
Easy |
| 2192 |
Which carboxylic acid is a monomer used in the manufacture of nylon-6,6? |
Chemistry
Uses |
Medium |
| 2193 |
A factory needs a carbonyl compound to react with phenol to make Bakelite. Which should it use? |
Chemistry
Uses |
Medium |
| 2194 |
Which acid is used in the leather, textile and electroplating industries? |
Chemistry
Uses |
Hard |
| 2195 |
What is the shape of the trimethylamine molecule around the nitrogen atom? |
Chemistry
Structure, classification and nomenclature |
Easy |
| 2196 |
Which compound is a secondary amine? |
Chemistry
Structure, classification and nomenclature |
Easy |
| 2197 |
What is the IUPAC name of CH₃NHCH₂CH₃? |
Chemistry
Structure, classification and nomenclature |
Medium |
| 2198 |
Classify 2-methylpropan-2-amine, (CH₃)₃C–NH₂. |
Chemistry
Structure, classification and nomenclature |
Medium |
| 2199 |
What is the IUPAC name of (CH₃)₂N–CH₂CH₂CH₃? |
Chemistry
Structure, classification and nomenclature |
Hard |
| 2200 |
Which test gives a foul-smelling product only with primary amines? |
Chemistry
Preparation and properties |
Easy |