Which Combination of equal volumes of solution will result in buffer solution 0.1 M HCl and 0.2M NH3 0.2 M NaOH and 0.1M HNO2 0.1 M HCl and 0.1M NH3 0.1 M NaOH and 0.2M HCI
50ml of 0.2M solution of acid HA (Ka = 1.0 x 10^-5) and 50ml of NaA solution are given. What should be the concentration of NaA solution to make a buffer solution with pH = 4.00? 0.02 M 0.01 M 0.1 M 0.2 M
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May 2023
Choose the correct option that represents the result of the given calculation to the appropriate number of significant figures 1.5 x 3.12 4.68 4.7 4.6 4.07
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December 2022
What is the % ionic character in HI? (Given E.N of H = 2.1 & I= 2.5)
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December 2022
How many number of spectral lines are obtained when an electron jumps from 4th orbit to 2nd orbit in a hydrogen spectrum? 5 3 2 4.
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December 2022
Given that 2NH3 + N2 + 3H2 ; Delta H = 46 k.cal From the above reaction, heat of formation of ammonia is 46 k.cal -46 k.cal -23 k.cal 23 k.cal
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December 2022
-CCl3 attached to benzene ring act as m- directing is due to Hyper conjugation Electromeric effect Reverse hyper conjugation Inductive effect
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December 2022
A disc of mass m and radius r is rotating with angular velocity (!). Another disc of mass 2m and radius r/2 is placed coaxially on the first disc gently. The angular velocity of the system is 5/2(!). 3/2(!). 2/5(!). 2/3(!)
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December 2022
The actual weight of one atom of element x is 3.95 x 10g. Its weight in amu is 197 238 16 12
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December 2022
If fs, fx and f, are static dynamic and rolling frictions then fs is always greater than ft f is always greater than fr f, may less than fx f- always greater than f, and fi
reejasuprithaselvam
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December 2022
The temperature of a gas is T K. Calculate the final temperature in which the volume is get halved of initial and pressure reduced to 1/4th of initial. 8 T1 T1 8 16 T1 T1/16
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December 2022
Which of the following statements is incorrect? Q is path dependent function H is state function both H and Q are state functions both (1) and (2)
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Asked:
December 2022
Work done by the gas when it is freely expanded, from 5L to 10L in vacuum is 5 L atm 0 L atm 506.5 J 15 L atm