wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn] a. Increase b. Decrease c. No effect 2.The test tube used in the determination of the ΔHrxn for nitric acid was still wet with water. [ magnitude of ΔHrxn] a. Increase b. Decrease c. No effect 3.The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. [Ccal] a. Increase b. Decrease c. No effect 4.The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. However, the NaOH solution used in the determination of ΔHrxn was of the correct concentration. [magnitude of ΔHrxn] a. Increase b. Decrease c. No effect 5.The thermometer and stopper were inserted to the test tube 5 minutes after adding the base in the calibration part.
Please give explanation as well.
1. A wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn]
a. Increase
b. Decrease
c. No effect
2.The test tube used in the determination of the ΔHrxn for nitric acid was still wet with water. [ magnitude of ΔHrxn]
a. Increase
b. Decrease
c. No effect
3.The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. [Ccal]
a. Increase
b. Decrease
c. No effect
4.The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. However, the NaOH solution used in the determination of ΔHrxn was of the correct concentration. [magnitude of ΔHrxn]
a. Increase
b. Decrease
c. No effect
5.The thermometer and stopper were inserted to the test tube 5 minutes after adding the base in the calibration part. [Ccal]
a. Increase
b. Decrease
c. No effect
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