Calculate the AH° of the borate dissolution at 25°C in kJ mol1, if the 22.12 mL of 0.025 M HCI solution used up to titrate 11.14 mL of saturated borax solution. AS° of borax dissolution is 61.1 J mol 1 K1, and gas constant is 8.314 J mol1K1. Record the answer to two decimal places. Borax dissolution reaction: NagB,O7 • 10H2O 2 2 Na (ag) + B,05(OH),) + 8 H2O() (aq) Reaction of borate anion with HCl: B,O;(OH),) )4 B(OH)3(aq) +3 H2O+2 H (aq)

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Calculate the AH° of the borate dissolution at 25°C in kJ mol-1, if the 22.12 mL of 0.025 M HCI
solution used up to titrate 11.14 mL of saturated borax solution. AS of borax dissolution is 61.14
J mol 1 K1, and gas constant is 8.314 J mol 1K1. Record the answer to two decimal places.
Borax dissolution reaction:
NagB.O7 • 10H20) 2 Na (ag) + B,O5(OH),le) + 8 H20)
(aq)
Reaction of borate anion with HCl:
B,Os(OH),) + 3 H20) + 2 H (aq) → 4 B(OH)3(ag)
(aq)
Transcribed Image Text:Calculate the AH° of the borate dissolution at 25°C in kJ mol-1, if the 22.12 mL of 0.025 M HCI solution used up to titrate 11.14 mL of saturated borax solution. AS of borax dissolution is 61.14 J mol 1 K1, and gas constant is 8.314 J mol 1K1. Record the answer to two decimal places. Borax dissolution reaction: NagB.O7 • 10H20) 2 Na (ag) + B,O5(OH),le) + 8 H20) (aq) Reaction of borate anion with HCl: B,Os(OH),) + 3 H20) + 2 H (aq) → 4 B(OH)3(ag) (aq)
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