2,3 and 4 problem
Q2. Same quantity of current is passed through molten NaCl and molten Al2O3. If 4.6 g. of Na was deposited in one cell, the mass of Al deposited in other cell is :-
(1) 0.9 g (2) 1.8 g (3) 2.7 g (4) 3.6 g
Q3. A certain current liberates 0.5g of hydrogen in 2 hr. How many grams of copper can be deposited by the same current flowing for the same time in a copper sulphate solution?
(1) 12.7 g (2) 15.9 g (3) 31.8 g (4) 63.5 g
Q4. A quantity of electric charge that brings about the deposition of 4.5 g Al from Al+3 at the cathode will also produce the following volume (STP) of H2(g) from H+ at the cathode
(1) 44.8 L (2) 22.4 L (3) 11.2 L (4) 5. 6 L
Kindly refer the links for answers to your queries:
Q.2. https://www.meritnation.com/ask-answer/question/same-quantity-of-current-is-passed-through-molten-nacl-an/electrochemistry/11555942
Q.3. https://www.meritnation.com/ask-answer/question/pls-solve-3-q-3-a-certain-current-liberates-0-5-g-of-hy/some-basic-concepts-of-chemistry/12257239
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Q.2. https://www.meritnation.com/ask-answer/question/same-quantity-of-current-is-passed-through-molten-nacl-an/electrochemistry/11555942
Q.3. https://www.meritnation.com/ask-answer/question/pls-solve-3-q-3-a-certain-current-liberates-0-5-g-of-hy/some-basic-concepts-of-chemistry/12257239
For remaining query, we request you to post them in separate threads.