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WorksheetsCHM083 TOPIC 4
Total questions: 10
Worksheet time: 2hrs 58mins
Select the correct definition for solution.
Substance dissolved in solvent
A homogeneous mixture of two or more substances
A mixture contains two or more substances that are not chemically combined
Substance in which solute dissolves
What is the molarity of 5.30 g of Na2CO3 dissolved in 400.0 mL solution?
0.105 M
0.125 M
0.25 M
0.225 M
How much NaOH (in grams) is needed to prepare 546 mL of solution with a concentration of 0.347 M?
0.189 g
7.578 g
134.862 g
239.141 g
How many moles of Ca(NO3)2 are there in 75 mL of 0.25 M solution?
0.0188 mol
0.02 mol
0.0321 mol
0.044mol
You have a 0.5 M MgSO4 stock solution available. Calculate the volume of the stock solution needed to make 2.0 L of 0.20 M MgSO4.
0.8 L
0.1 L
5.0 L
0.5 L
You have 505 mL of a 0.125 M HCl solution and you want to dilute it to exactly 0.100 M. How much distilled water should you add?
631.25 mL
404.00 mL
126.25 mL
101.00 mL
Calculate the molarity of solution prepared when 100 ml of a 6.0 M KCl solution is diluted to a volume of 5.0 L
0.3 M
3.0 M
1.2 M
0.12 M
What happens in a neutralization reaction?
The hydrogen ions from the acid and the hydroxide ions from the base come together to form water.
The hydrogen ions from the base and the hydroxide ions from the acid come together to form water.
A substance's pH is increased to a value greater than 7.
A solution of a known concentration and volume is added until the reaction is completed.
The following neutralization reaction occurs in the classroom.
HCl + KOH → H2O + KCl
In this acid-base titration, it was found that 25.00 mL of 0.50 M KOH was used to neutralise an unknown molarity of 15.0 mL HCl. Determine the molarity of HCl.
0.80 M
1.20 M
5.20 M
12.50 M
In an acid-base titration, it was found that 37.00 mL of 0.40 M NaOH was neutralised by an unknown volume of 0.70 M H2S04. Determine the colour change of the solution when the titration reach the end point if the indicator used was methyl orange.
Yellow to orange
Orange to yellow
Pink to colourless
Red to blue
