Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
50ml of 0.1M NH4OH ,25ml NH4Cl weere used to make a buffer . what is the PH is if Pkbis 4.8?Solution) The given buffer is a base buffer[NH4OH] =[(50*0.1)/75][NH4Cl] =[(25*2)/75]From the principle V1M1=V2M2For a base buffer pOH = pKb + log [Salt/Base]thus pOH 4.8+ log [{(25*2)/75}/{(50*0.1)/75}] = 4.8+ log (10) = 4.8+1 =5.8Therefore pH = (14-pOH) = (14-5.8) = 8.2
Q. What are the rules used for round off numbers? 1. If the digit to the instantaneous right of the last significant figure is less than five don't change the last significan
Elements of Group 13 are less metallic than those of groups 1 and 2. Within the group, there is a variation in metallic character. Boron, the smallest element in this group is a no
In a design of a tower, water is chilled from T wa = 65°F to T wb = 45°F. The inlet water is w a = 1000 lb/h. Calculate the amount of water that evaporates and the mass flow of
Definitions A Br ø nsted base a proton acceptor, and Br ø nsted acid is a proton donor. In this definition an acid-base reaction accepts protolysis:
Unsaturated dicarboxylic acids The molecular formula of the simplest unsaturated dicarboxylic acid is HOOC.CH=CH.COOH This formula, however represents two chemical compounds, m
Name the chief ore of silver. Explain with chemical equations the extraction of silver from this ore.
1. Wet air containing 4.0 mole% water vapor at 76°F and 14.8 psia is passed through a column of calcium chloride pellets. The pellets absorb 97% of the water and none of the oth
what is the stability order of Li2, H2, B2 B.O of Li2 is 1 B.O of H2 is 1 B.O of B2 is also 1 so for stability order u need to see the no of electrons in antibonding orbitals mo
determination of lattice energy
Interactive periodic table In this interactive periodic table animation you can view details of all components through clicking on it. You can select the colored through option
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd