level: Practicals
Questions and Answers List
level questions: Practicals
| Question | Answer |
|---|---|
| What is the method for HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION? | 1) Clamp you gas syringe onto your clamp stand. 2) Measure 50ml of 0.5 mol/dm³ hydrochloric acid in your measuring cylinder, and then pour it into your conical flask. 3) Add a magnesium ribbon and measure how much gas is produced every 30 seconds for 5 minutes. 4) Repeat the steps but with 50ml of 1.0 mol/dm³ of hydrochloric instead, and compare the results. |
| What is the hypothesis for HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION? | I believe that by increasing the concentration of hydrochloric acid will lead to the reaction being faster. |
| What is the independent variable for HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION? | The concentration of hydrochloric acid. |
| What is the dependent variable for HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION? | How much gas is produced every 30 seconds for 5 minutes. |
| What is the control variable for HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION? | - The mass of the magnesium used. - The mass of the hydrochloric acid used. |
| What is the equipment list for HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION? | - Gas syringe. - Clamp stand. > Clamp and Boss - Conical flask. - Measuring cylinder. - Hydrochloric acid (1.o mol/dm³ and 0.5 mol/dm³) - Magnesium ribbons. - Stopwatch. |
| What is the word equation for HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION? | Hydrochloric acid + Magnesium → Magnesium Chloride + Hydrogen |