25 ml of 2N HCl. 50 ml of 4N HNO3 and x ml of 5M H2SO4 are mixed together and total volume is made up to 1 L with water. 50 ml of this acid mixture exactly neutralizes 25 ml of 1N Na2CO3 solution, then the value of x is
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25 ml of 2N HCl. 50 ml of 4N HNO3 and x ml of 5M H2SO4 are mixed together and total volume is made up to 1 L with water. 50 ml of this acid mixture exactly neutralizes 25 ml of 1N Na2CO3 solution, then the value of x is